STEMAcademiaHumanitiesSocial SciencesAgriculture & Farming
  • My list of the most dangerous animals in the USA, where I name the animals which are most capable of injuring and, in rare circumstances, killing people.

    Top 10 Most Dangerous Animals in the USA

    Top 10 Most Dangerous Animals in the USA

    by Paul Goodman4

  • Invertebrates are diverse forms of animals. Here are nine (9) major groups of invertebrate animals and the most common examples of invertebrates under each type. There are also pictures of different major groups of invertebrate animals.

    9 Major Groups of Invertebrate Animals

    9 Major Groups of Invertebrate Animals

    by Ray15

  • The unexplored bottom of the ocean floor is home to a plethora of weird and creepy sea creatures who never see the sun. In this Hub I list ten of them, and explain exactly what makes them so creepy.

    The Top Ten Creepy Deep Sea Creatures

    The Top Ten Creepy Deep Sea Creatures

    by K S Lane9

  • According to genetics, it is extremely rare, but still possible, for a black person to have blue eyes. This article will cover the science behind black people with blue eyes, and will provide some well-known examples.

    The Origin of Black People With Blue Eyes

    The Origin of Black People With Blue Eyes

    by Edmund Custers45

  • Who doesn't love oak trees? They're big, beautiful, useful, and can live for hundreds of years. Here's a list of some, with pictures of bark and leaf descriptions to aid in identification. Happy oak hunting!

    Types of Oak Trees (With Pictures of Trunk Bark)

    Types of Oak Trees (With Pictures of Trunk Bark)

    by Rachel Koski7

  • Many people believe snakes are slippery, sneaky creatures that will strike when you least expect them and, well, those folks are right. But snakes can also have an unusual grace and exotic allure. Here are some of the most beautiful snakes in the world.

    13 Most Beautiful Snakes in the World

    13 Most Beautiful Snakes in the World

    by DarkSinistar10

  • Oftentimes in science, we encounter boundary objects that push the theories we have to the brink. Take brown dwarfs for example. Planet or star? You be the judge.

    Is a Brown Dwarf a Planet or a Star?

    Is a Brown Dwarf a Planet or a Star?

    by Leonard Kelley2

  • This article lists five fool-proof methods to help you memorize the elements of the periodic table, their chemical symbols, and their atomic numbers. Whether you're studying for a periodic table quiz or just a chemistry enthusiast, these methods will help you memorize the elements in no time!

    How to Memorize the Elements of the Periodic Table

    How to Memorize the Elements of the Periodic Table

    by K S Lane1

  • The physics of a waterfall are curious. The second law of thermodynamics says that things tend toward a more disordered state. Is the second law saying that destruction (erosion) wins over creation?

    How Does a Waterfall Work, Exactly?

    How Does a Waterfall Work, Exactly?

    by Laura Schneider9

  • The banana spider is famous for its beautiful web, which appears to be golden when it shines in the sun. The spider's venom is of the same type as that of a black widow, but much weaker.

    Facts About Banana or Golden Orb Spiders

    Facts About Banana or Golden Orb Spiders

    by Paul Goodman65

  • Do wild cheetahs attack, kill, or eat human beings? This article answers this question and provides more information about these extraordinary animals.

    Do Cheetahs Hunt or Kill Humans?

    Do Cheetahs Hunt or Kill Humans?

    by Melissa A Smith8

  • So why do aggressive wasps always bother people? This article explores not only the problem itself, but how to avoid it and why we as humans largely cause much of the problem ourselves....

    Why Do Aggressive Wasps Always Bother People?

    Why Do Aggressive Wasps Always Bother People?

    by Cindy Lawson165

  • Exploring the phenomenon of people thinking animals are "sad" in zoos because of the expression on their faces. Can you read an animal's mind by looking at it?

    The Sad Animals in Zoos Myth

    The Sad Animals in Zoos Myth

    by Melissa A Smith86

  • This article suggests a list of the 17 greatest airplanes of all time, emphasizing the importance of each during its time and place in world history.

    17 Best Airplanes of All Time

    17 Best Airplanes of All Time

    by Kelley Marks60

  • Many people struggle to tell these two reptiles apart, but it isn't that difficult when you know what to look for. What is the difference between alligators and crocodiles? Well, there are essentially 8 main ways to tell them apart...

    The 8 Main Differences Between Alligators and Crocodiles

    The 8 Main Differences Between Alligators and Crocodiles

    by Paul Goodman94

  • Parasites are everywhere. They live on your skin, in your hair and even inside you! Some are harmless, many are necessary for health, and a few are DEADLY. Let's find out more about crazy PARASITES...

    Top 10 Interesting and Fun Facts About Parasites

    Top 10 Interesting and Fun Facts About Parasites

    by Amanda Littlejohn28

  • There are many deadly things in the world that can easily bring our lives to an end. But what are the deadliest? Did you know a Japanese delicacy actually contains the 5th deadliest poison known?

    5 Deadliest Poisons Known to Man and Their Effects

    5 Deadliest Poisons Known to Man and Their Effects

    by John Smith4

  • The hull (or outerlayer) of a corn kernel is made up of mostly cellulose. Cellulose does not break apart easily when chewed, and we humans don't have the enzyme to break it down.

    Why Does Corn Come Out Whole in My Poop?

    Why Does Corn Come Out Whole in My Poop?

    by Barkley Rosehill45

  • We've all experienced a short-term power outage, but what kind of problems would we have if the power was out for a week, or even longer? We depend on electricity for a lot more than lights and TV.

    Could We Survive a Long-Term Power Outage?

    Could We Survive a Long-Term Power Outage?

    by Sherry Hewins54

  • Did you know that up to 2% of genes in the human population are actually from Neanderthals? Mood disorders and sleeping patterns are among the traits influenced by these genes.

    8 Neanderthal Traits in Modern Humans

    8 Neanderthal Traits in Modern Humans

    by Leah Lefler6

  • Black Caterpillar with Spikes and Red Bands: What is it? Did you find a black fuzzy caterpillar? Does it look like this? If so, you might have a giant leopard moth caterpillar, also known as a great leopard moth or an eyed tiger moth (scientific...

    Black Fuzzy Caterpillar

    Black Fuzzy Caterpillar

    by puzzlerpaige214

  • This list includes bird species from all over the globe. Each one is unique, but they all have one thing in common—their stunningly colorful plumage makes them stand out from the flock as some of the most beautiful avians in the world!

    The World's 11 Most Beautiful Birds

    The World's 11 Most Beautiful Birds

    by Laurie Bennett22

  • The lion is a multi-cultural symbol of power and strength. But how much do we really know about them? Among the things we know well about them, is their hunting ability. This Hub explores the hunting behaviour of the lion in-depth...

    How Do Lions Hunt and Kill Their Prey?

    How Do Lions Hunt and Kill Their Prey?

    by James Kenny42

  • While wildlife authorities insist they do not live in NC, cougars and an unidentified large black cougar-like cat have regularly been sighted in North East North Carolina.

    The Eastern Cougar in North Carolina

    The Eastern Cougar in North Carolina

    by Donna Campbell Smith85

  • A collection of all the essential facts about the southern black racers snake. These snakes are non-venomous and common throughout the southeastern United States.

    Facts About Southern Black Racer Snakes

    Facts About Southern Black Racer Snakes

    by Paul Goodman31

  • Birds are among the most beautiful creatures on Earth. They're also some of the weirdest! Check out these crazy-but-true interesting and fun facts about our feathered friends...you'll be amazed!

    Top 10 Interesting and Fun Facts About Birds

    Top 10 Interesting and Fun Facts About Birds

    by Amanda Littlejohn45

  • The mean average from an ungrouped frequency table can be found by following these three simple steps: Step 1. First you will need to add a new column onto the end of the frequency table. You can label this column fx as you are going to multiply...

    How to Get the Mean Average From a Frequency Table

    How to Get the Mean Average From a Frequency Table

    by Mark0

  • Diamonds are very important to our society because of the meanings we attach to them. But, where do diamonds come from? They form in four ways: deep eruptions, subduction, impact, and collisions in space.

    4 Ways That Diamonds Are Formed

    4 Ways That Diamonds Are Formed

    by Melissa Clason1

  • Where are the world's supervolcanoes? The Western United States, Italy, New Zealand, and Asia all contain volcanoes capable of catastrophic eruptions.

    Supervolcanoes Around the World

    Supervolcanoes Around the World

    by Leah Lefler66

  • No one wants to die, but these animals present a really bad way to go. Which of these ways would you rather be killed by an animal if you had to choose. Danger lurks with every creature on this list.

    Top 10 Horrible Ways Animals Can Kill You

    Top 10 Horrible Ways Animals Can Kill You

    by Teeuwynn Woodruff1

  • Saddleback caterpillars are great to look at, but not so great if you pick one up. They are loaded with extremely irritating venom and their hairs that will stick in your skin are their delivery system. So, stay away from them and teach your children to keep their distance from all caterpillars.

    Saddleback Caterpillars: Admire Them From a Distance

    Saddleback Caterpillars: Admire Them From a Distance

    by Mike and Dorothy McKenney0

  • This is a full guide in finding the general term of sequences. There are examples provided to show you the step-by-step procedure in finding the general term of a sequence.

    How to Find the General Term of Sequences

    How to Find the General Term of Sequences

    by Ray12

  • For some duckweed is a menace, for others it's a Godsend. Here in Brazil, we have built duckweed ponds and are encouraging it to grow to use as an animal feed . This is just one of its many uses.

    The Benefits of Growing Duckweed

    The Benefits of Growing Duckweed

    by Mary Wickison87

  • Looking for fun, quick, and easy science experiment ideas for an upcoming science fair? Check out these step-by-step instructions for four different Skittles science experiments.

    Skittles Science Fair Project Instructions

    Skittles Science Fair Project Instructions

    by Virginia Kearney58

  • Learn interesting facts about the behavior of the blue jay, view pictures, and learn how to keep this bully away from your bird feeder.

    Blue Jay Facts, Pictures, and Behavior

    Blue Jay Facts, Pictures, and Behavior

    by Eric Dockett15

  • Different Types of Stars in the Universe - Physical characteristics and images of the many different kinds of stars, from red giants to white dwarfs.

    Different Types of Stars in the Universe

    Different Types of Stars in the Universe

    by Thomas Swan49

  • Volcanoes are natural features of the Earth's lanscape. Volcanoes form from the natural internal forces acting inside the Earth. Mos volcanoes form at the boundaries of tectonic plates either in the ocean or on land. Others may form away from the boundaries of plate tectonics; however all volcanoes are formed from the natural internal energies occurring inside the planet.

    How Does a Volcano Form?

    How Does a Volcano Form?

    by Jose Juan Gutierrez11

  • The Sunshine State has all sorts of over-sized bugs and creep-crawlies. This article looks at the biggest spiders in Florida.

    6 Biggest Spiders in Florida

    6 Biggest Spiders in Florida

    by Paul Goodman13

  • Ever wonder what to call a grouping of flamingos, or God forbid, a group of lions? Here is a comprehensive list of every collective name for gatherings of every animal.

    A Comprehensive List of Animal Group Names

    A Comprehensive List of Animal Group Names

    by Sam Mendoran1

  • Science isn't confined to a lab - it is all around us. The 10 fun, cheap and easy experiments in this hub make great family projects. Above all this proves that science is fun - what other school subject helps you make slime and rockets!?

    Top 10 Science Experiments to Try at Home

    Top 10 Science Experiments to Try at Home

    by Rhys Baker116

  • This article suggests the biggest man-made environmental disasters in the history of the United States. These disasters may not have killed people, but they severely damaged the ecosystem and will cost millions, if not billions, of dollars to clean up.

    12 Worst Man-Made Environmental Disasters in American History

    12 Worst Man-Made Environmental Disasters in American History

    by Kelley Marks4

  • Are the caterpillars in your garden toxic? Do they sting? Will they seriously damage your plants? The answers are in this easy and authoritative guide to garden caterpillars.

    Garden Caterpillar Identification and Guide

    Garden Caterpillar Identification and Guide

    by GreenMind Guides5

  • The oceans contain a vast variety of creatures. Here are some marine animals whose names span the alphabet from A to Z.

    List of Sea Animals A-Z

    List of Sea Animals A-Z

    by leibwood216

  • The anesthesiologist monitors, and responds to, changes in your vital signs during your entire surgery. Heart rate, rhythm, blood pressure, oxygen level, breathing and other parameters give the anesthesiologist the information needed to keep you safe and comfortable during an anesthetic.

    Patient Monitoring during Anesthesia

    Patient Monitoring during Anesthesia

    by TahoeDoc5

  • As human beings we live, breathe and eat chemicals every day. However, that doesn't mean that some chemicals aren't insanely dangerous. This article lists 10 of the most dangerous chemicals known to man kind, including ones that are explosive, poisonous, carcinogenic, and corrosive.

    The 10 Most Dangerous Chemicals Known to Man

    The 10 Most Dangerous Chemicals Known to Man

    by K S Lane1

  • In this article, I give essential facts on six of the most dangerous snakes in Florida, all of which are venomous and can deliver potentially fatal snake bites. My list includes the southern copperhead, eastern diamondback, and the cottonmouth.

    6 Most Dangerous Snakes in Florida

    6 Most Dangerous Snakes in Florida

    by Paul Goodman21

  • What role does water play in life and what would happen if we were to lose it or it didn't exist? There are already parts of the world where we can see how life would change, if there were no water. This article explores it further.

    Why Water Is Important to Life

    Why Water Is Important to Life

    by Susette Horspool43

  • The uses of math for the layperson are essentially endless. No matter whether you are a struggling student, a homeowner, or someone simply trying to lose weight, math is the universal language that has an something to offer everyone.

    Practical Applications of Mathematics in Everyday Life

    Practical Applications of Mathematics in Everyday Life

    by Christopher Wanamaker37

  • The base 16, hexadecimal numbering system is regularly used in computer coding for conveniently representing a byte or word of data. This guide shows you how to convert from hex to binary and binary to hexadecimal.

    How to Convert Hex to Binary and Binary to Hexadecimal

    How to Convert Hex to Binary and Binary to Hexadecimal

    by Eugene Brennan2

  • Biology is the study of living organisms and there are many subfields of study under that umbrella. From anatomy to zoology, there are more than 30 different areas of study under biology.

    Branches of Biology and Their Meaning

    Branches of Biology and Their Meaning

    by leefrancesemery225

  • Together with many social and economic benefits of urbanization, there are also environmental problems. Cities comprise less than 3% of the Earth's surface, but there is a massive local pollution.

    Environmental Problems of Modern Cities

    Environmental Problems of Modern Cities

    by Ksenija9

  • Most of the top 10 worst shark attacks in the world involved maritime shipping disasters where people were thrown into shark-infested waters.

    Top 10 Worst Shark Attacks in the World

    Top 10 Worst Shark Attacks in the World

    by sharkfacts52

  • Human eye anatomy—a journey through the anatomy of the eye to understand how different structures in the eyeball work together to achieve vision.

    Anatomy of the Eye: Human Eye Anatomy

    Anatomy of the Eye: Human Eye Anatomy

    by Edmund Custers11

  • Northern Cardinal birds inhabit most of North America. Photos of the mating and nesting behavior of this striking red bird.

    The Cardinal's Nest

    The Cardinal's Nest

    by Yvonne L B137

  • Plants are equipped to adapt to environmental situations and stressors, just like humans. They also respond to tactile stimulation, but do plants actually have feelings?

    Do Plants Have Feelings?

    Do Plants Have Feelings?

    by Catherine Tally43

  • Hair loss is a frequently caused side effect of drugs but hair color is another adverse effect that is rare but bothersome. Black or brown hair changing to blond, greying or reddening of hair, and darkening of originally grey hair have been reported in many cases.

    Drugs That Induce Hair Color Changes

    Drugs That Induce Hair Color Changes

    by Sherry Haynes6

  • Science has proven that redheads are physically unique among all other people. Find out why, historically, some people thought they were evil, while others thought they held magical powers.

    How Are Redheads Unique and Different?

    How Are Redheads Unique and Different?

    by C E Clark196

  • Recycling plastic is essential for the well-being of our planet. This article gives simple guidelines to easily identify different types of plastic in line with the international plastic identification code.

    How to Identify Different Types of Plastic

    How to Identify Different Types of Plastic

    by grumpiornot10

  • It’s hard to make a true-color family portrait of the solar system. It turns out that most photos of planets aren’t true color! Here's my attempt, using the best NASA photos I could find.

    True-Color Photos of All the Planets

    True-Color Photos of All the Planets

    by Ellen22

  • Varanus salvator, the Asian water monitor, is one of the most accessible large lizards on Earth. If you know where to look, one can get up close and personal with these giants of the reptilian world

    The Asian Water Monitor Lizard; Varanus salvator

    The Asian Water Monitor Lizard; Varanus salvator

    by Greensleeves Hubs41

  • Pentas lanceolata also known as starflower, Egyptian star clusters, Egyptian star flower & Egyptian stars is grown as a ground cover plant. Do you know that this pentas plant is also a medicinal plant

    Does Pentas Plants Have Medicinal Values?

    Does Pentas Plants Have Medicinal Values?

    by Mazlan3

  • The black vulture and the turkey vulture are often called "Buzzards." These birds are anything but Buzzards. Buzzards are European birds related to Eagles. Vultures and condors differ from buzzards.

    The Black Vulture and the Turkey Vulture

    The Black Vulture and the Turkey Vulture

    by Wesman Todd Shaw42

  • A look at the diversity of Arizona's Coconino National Forest and some of the wildlife that makes its home there, in the northern part of the state, including the San Francisco Peaks near Flagstaff

    Wildlife of the Coconino National Forest

    Wildlife of the Coconino National Forest

    by Deb Kingsbury45

  • Marmots live in mountainous areas of British Columbia. They are social and very vocal animals that often form colonies. One species—the Vancouver Island Marmot—is critically endangered.

    The Marmots of British Columbia: Wildlife in Canada

    The Marmots of British Columbia: Wildlife in Canada

    by Linda Crampton64

  • The article is written in rather technical level, providing an overview of linear regression. Linear regression is based on the ordinary list squares technique, which is one possible approach to the statistical analysis. Both univariate and multivariate linear regression are illustrated on small concrete examples. In addition to the explanation of basic terms like explanatory and dependent variables, we will see how to interpret results obtained by a regression analysis.

    Univariate and Multivariate Linear Regression

    Univariate and Multivariate Linear Regression

    by flysky8

  • The known Universe contains 100 billion galaxies grouped in superclusters and separated by empty space. This article explains what the Universe is, how it started, what it's made of, and what its future might be.

    Top 10 Interesting and Fun Facts About the Universe

    Top 10 Interesting and Fun Facts About the Universe

    by Amanda Littlejohn8

  • North America is home to six species of wildcats. Learn more about the wildcats of North America with pictures and videos.

    The Six Wildcats of North America

    The Six Wildcats of North America

    by Sheila Brown76

  • The lamprey is a frightening eel-like parasite, but could they really attack humans? Here's a look at this monster of nightmares.

    Do Lampreys Attack Humans?

    Do Lampreys Attack Humans?

    by Luther Urswick25

  • Most people confuse bees, wasps, and hornets, but there are several significant differences between the three. This article was written to educate you about those differences.

    Hornets, Bees and Wasps:  Which Is Which?

    Hornets, Bees and Wasps: Which Is Which?

    by Mike and Dorothy McKenney7

  • 5 properties of water: cohesion, high specific heat, high heat of vaporization, lower density of ice, and high polarity.

    5 Properties of Water

    5 Properties of Water

    by livingconsciously152

  • Fool's Gold, chemical name pyrite, is a puzzling mineral that has baffled gold prospectors for centuries. This article details the differences between pyrite and true gold and explains why the humble rock isn't nearly as valuable as its golden lookalike.

    What Is Fool's Gold?

    What Is Fool's Gold?

    by K S Lane5

  • Learn about dragonflies, what they eat and how they fly as well as the type of habitat in which they live. We'll also explore some of the more popular myths and legends surrounding the dragonfly.

    Dragonfly Facts and Symbolism

    Dragonfly Facts and Symbolism

    by Melissa Flagg COA OSC61

  • Tsunamis cause have whenever they hit - death, destruction and carnage. Find out the exact effects on land and in the sea.

    What Are the Effects of a Tsunami?

    What Are the Effects of a Tsunami?

    by Rickrideshorses500

  • To say there are quite a few different use of a coconut is a huge understatement, there are hundreds of uses of this fruit of the Palm Tree. Every part of the coconut and the tree has a purpose.

    Different Uses for a Coconut

    Different Uses for a Coconut

    by Suzanne Ridgeway42

  • Tsunamis are a natural disaster with devastating effects. Here you'll find a detailed breakdown of what causes a tsunami, which is perfect for school projects and essay answers.

    What Causes a Tsunami?

    What Causes a Tsunami?

    by Rickrideshorses295

  • The dragon blood tree of Socotra Island has an unusual appearance. It secretes a red resin known as dragon's blood when its bark is injured. The resin is used in many ways. The island is home to other fascinating and often unique organisms besides the tree.

    The Strange Dragon Blood Tree of Socotra Island

    The Strange Dragon Blood Tree of Socotra Island

    by Linda Crampton56

  • The great horned owl is an avian apex predator, and perhaps the finest predator to have ever lived. In this article, I will detail just about everything you need to know about these magnificent raptors, including what they look like, what they eat, and how they live.

    The Great Horned Owl: A Magnificent Avian Apex Predator

    The Great Horned Owl: A Magnificent Avian Apex Predator

    by Wesman Todd Shaw48

  • A growth or a culture medium is composed of different nutrients that are essential for microbial growth—here are some that are used in microbiological laboratories.

    Types of Culture Media

    Types of Culture Media

    by hassam231

  • Several external factors affect the way we perceive eye color. This article discusses how environmental factors can impact hazel eyes, making it easy to mistake them for green eyes.

    The Difference Between Green and Hazel Eyes

    The Difference Between Green and Hazel Eyes

    by Edmund Custers3

  • This article answer the questions: "What is Physics?" and "What are the branches of Physics?" Learn about what physics is and its many different branches.

    Physics: Definition and Branches

    Physics: Definition and Branches

    by Muhammad Rafiq205

  • Why is the sky blue? Why is the moon sometimes out in the day? How much does the Earth weigh? This article gives straightforward answers to 12 of the trickiest questions I have been asked by kids while teaching. Enjoy!

    Top 12 Tricky Science Questions Answered

    Top 12 Tricky Science Questions Answered

    by Rhys Baker108

  • Prior to the discovery of blood groups, blood transfusions were often deadly. Physicians attempted the use of milk and animal blood as an alternative to human blood, but met with limited success: the discovery of blood types allowed modern transfusions to safely take place. Blood typing, blood groups around the world, and the genetics of blood types are discussed in this article.

    Blood Types:  History, Genetics, and Percentages Around the World

    Blood Types: History, Genetics, and Percentages Around the World

    by Leah Lefler23

  • While Australia is home to the most animals who will kill you, Japan seems to be home to the most animals that will make you go "d'awww". Here are my top ten favorite wild animals of Japan.

    The 10 Most Adorable Japanese Animals Ever!

    The 10 Most Adorable Japanese Animals Ever!

    by Rachael Lefler24

  • There are many different types of plants, ranging from grand trees to tiny algae. This is an overview with pictures.

    Types of Plants (With Pictures)

    Types of Plants (With Pictures)

    by Will Apse21

  • Fireflies are some of the most fascinating insects you will ever see if you have been fortunate enough to see one. Unfortunately, they are not as common as they once were. Where have all of the fireflies gone?

    Oh Firefly, Where Art Thou?

    Oh Firefly, Where Art Thou?

    by Jamie Brock134

  • Destruction of our environment is the biggest contribution that we make to the extinction of many species in the forest. It is estimated that approximately half the number of the world’s animals live in the rainforests. Learn which species are threatened and what you can do to help!

    Endangered Animals in the Rainforest

    Endangered Animals in the Rainforest

    by livingsta192

  • Learn to identify songbirds by type and see pictures of common backyard birds. You might be surprised to discover how some of the birds you see in your garden and yard are related. They are all of the order Passeriformes, but then split into many different families.

    Common Types of Backyard Birds in the Northeast

    Common Types of Backyard Birds in the Northeast

    by Eric Dockett7

  • Katydids are solitary creatures. Rarely will you ever see more than one of them at any given time. And, their life is brief - most only live about a year. This article will give you some insight as to how that brief life is spent.

    Katydids: A Short, Sedentary, Solitary Life

    Katydids: A Short, Sedentary, Solitary Life

    by Mike and Dorothy McKenney7

  • Fascinating facts and photos featuring the most common and some more unusual stones found along Lake Michigan's shorelines. Including various types of basalt, septarian brown stones, limestone, granite, gabbro, diorite, gneiss, schist, sandstone, silt stone, mud stone, geodes, chalcedony and agate.

    I Found a Rock on the Beach and Wondered

    I Found a Rock on the Beach and Wondered

    by Kathi17

  • A basic discussion on the null hypothesis, z-scores, and probability. This article includes examples of the null hypothesis, one-tailed, and two-tailed tests. A coin is tossed and comes up tails ten times: is this just random chance, or is an unfair coin being used? Learn when to reject the null hypothesis: if the probability (P) is less than the chosen significance level, the null must be rejected.

    Null Hypothesis and Formulas: A Definition With Examples

    Null Hypothesis and Formulas: A Definition With Examples

    by Leah Lefler4

  • Black widow spiders, scientific name Latrodectus mactans, are among the most venomous of all arachnids. I have been working with insects and spiders for almost 20 years and I get a lot of questions about black widow spiders. This article addresses all of your black widow concerns and curiosities.

    Black Widow Spider Identification

    Black Widow Spider Identification

    by GreenMind Guides23

  • If you see yellow garden spiders in your garden, don't squash them! Be thankful. Argiope aurantia are large, bright, beautiful and beneficial predators. They are also a sign of healthy garden ecology.

    The Yellow Garden Spider (Argiope Aurantia)

    The Yellow Garden Spider (Argiope Aurantia)

    by Jill Spencer51

  • There are over 3,000 species of cicadas from annuals to periodicals which emerge every 13 or 17 years. These flying insects are harmless but arrive in droves with a loud, resonating song.

    Cicada Facts, Folklore, and Photos

    Cicada Facts, Folklore, and Photos

    by Peg Cole32

  • Water has some properties that can make it a good refrigerant. It also possesses some undesirable properties that makes its application as a refrigerant very challenging and inefficient to implement.

    Should Water Be Used as a Refrigerant?

    Should Water Be Used as a Refrigerant?

    by Charles Nuamah4

  • Hair color is primarily genetic, and red hair is caused by mutations in the MC1R gene. The gene for red hair also causes an increased sensitivity to sunlight and a reduced sensitivity to anesthesia. Contrary to internet rumors, redheads are not going extinct! Famous redheads include Queen Elizabeth I and Malcolm X.

    Redheads: The Genetics of Hair Color

    Redheads: The Genetics of Hair Color

    by Leah Lefler107

  • Here are the sounds giraffes do make and when they make them. From grunts and bleats, to mews, coughs, hisses, and infra-sounds that are hard for humans to hear, giraffes are not as silent as people think.

    New Research: 12 Sounds Giraffes Do Make

    New Research: 12 Sounds Giraffes Do Make

    by ga anderson6

  • Though there isn't much research data available, we can confidently say that the rarest eye color in the world is Green. Amber, Violet/Red and Black are also extremely rare.

    Rarest Eye Color in Humans

    Rarest Eye Color in Humans

    by Edmund Custers772

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Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Marketing
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Statistics
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)
ClickscoThis is a data management platform studying reader behavior (Privacy Policy)