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  • Take a closer look at microscopy! Learn the differences between an electron and light microscope, know your resolution from your magnificaiton and learn how to correctly use a microscope.

    Types of Microscopy

    Types of Microscopy

    by Rhys Baker0

  • Roses are beautiful and often fragrant flowers that have inspired gardeners for many years. They produce a useful oil and tasty fruits called rose hips. The flowers have many symbolic meanings.

    Roses: Flower Facts, Photos, and Symbolic Meanings

    Roses: Flower Facts, Photos, and Symbolic Meanings

    by Linda Crampton18

  • Man has always been fascinated by the sky. Yet space exploration in earnest did not begin until the 20th century. A recap of man's remarkable achievements in search of new frontiers.

    10 Milestones of Space Exploration

    10 Milestones of Space Exploration

    by Marco1

  • Speed can be measured in many different ways and the instruments used to measure speed vary with the job.

    Speed Measuring Instruments

    Speed Measuring Instruments

    by Joan Whetzel7

  • Elements interact with each other constantly in the natural world. There are only a few elite ones who are noble enough to remain to themselves. But in general every element interacts with at least another, giving rise to a variety of structures,...

    Primary and Secondary Bonds

    Primary and Secondary Bonds

    by ria-majumdar14

  • Our world is filled a multitude of geologic hazards that can cause extensive property damage and even loss of human life. Mass wasting is one of those hazards that can be avoided or mitigated if you are prepared. Learn about the different types of mass wasting and what causes them.

    Geologic Hazards: What You Need to Know About Mass Wasting

    Geologic Hazards: What You Need to Know About Mass Wasting

    by CWanamaker2

  • There are three main types of nuclear radiation. What causes this radiation to be produced? What are the dangers and uses of nuclear radiation?

    What Is Nuclear Radiation?

    What Is Nuclear Radiation?

    by Sam Brind0

  • The magnification of a telescope can be improved by using extra optical devices. A Barlow lens and other hand-made devices will allow you to amplify the image seen through the telescope lens

    How to Increase the Magnification of a Telescope

    How to Increase the Magnification of a Telescope

    by Jose Juan Gutierrez0

  • Though no one knows for sure where the water on Earth came from, many look to comets for answers. But are we looking in the right place?

    Did Water on Earth Come From Comets?

    Did Water on Earth Come From Comets?

    by Leonard Kelley2

  • Electrolysis is the process in which a chemical reaction is started with electricity (Andersen). This is usually done with liquids and especially with ions dissolved in water. Electrolysis is used widely in today's industry and is a part of the...

    Electrolysis: The Way of the Future

    Electrolysis: The Way of the Future

    by Tinmar3

  • Fruit flies are those little insects that travel in swarms and hover around fruit, and you may have seen them in grocery stores. They don't just congregate in unkept stores—I have seen them in some high-end markets.

    What You Must Know About Fruit Flies

    What You Must Know About Fruit Flies

    by MargoPArrowsmith103

  • Once on the brink of extinction, the Eurasian lynx numbers have increased but they still remain critically endangered in certain areas.

    The Eurasian Lynx

    The Eurasian Lynx

    by Natalie Cookson2

  • Overuse of our groundwater resources has resulted in an ever prevalent problem of Earth fissures. As a property owner or potential buyer of land, there are several things you need to know about these large cracks in the ground in order for you to make an informed decision.

    Geologic Hazards: What You Need to Know About Earth Fissures

    Geologic Hazards: What You Need to Know About Earth Fissures

    by CWanamaker2

  • Wikimedia Commons A black widow is one of those creepy, crawly pests that you want to pretend does not exist. You have heard all about their reclusive nature, their poisonous bite and the potentially deadly venom from a multitude of sources--but you...

    The Black Widow Spider—the Cold Hard Facts

    The Black Widow Spider—the Cold Hard Facts

    by GabeTheGardener21

  • This article offers a list of 10 lakes or seas that are in danger of drying out to a great extent or disappearing entirely in a period of decades or years.

    10 Worst Drying Lakes in the World

    10 Worst Drying Lakes in the World

    by Kelley4

  • The Tasmanian devil is an endangered animal whose population is decreasing. The main reason for the decrease is devil facial tumor disease. Immunotherapy may one day be used to treat the condition.

    Tasmanian Devils and Devil Facial Tumor Disease (DFTD)

    Tasmanian Devils and Devil Facial Tumor Disease (DFTD)

    by Linda Crampton23

  • Giardia is an interesting parasite that causes an unpleasant intestinal disorder called giardiasis. Understanding the parasite's features and behaviour may lead to better treatments for the disorder.

    Giardia in the Intestine: The Parasite and Giardiasis

    Giardia in the Intestine: The Parasite and Giardiasis

    by Linda Crampton30

  • A genealogy timeline can help you organise your family history and open up new lines of enquiry. Learn how to create a genealogy timeline to uncover more of your family history.

    How to Make a Genealogy Time Line

    How to Make a Genealogy Time Line

    by Judith Hancock34

  • A magnet is an object that has a magnetic field strong enough to influence other materials. The molecules in a magnet are aligned to all face one way, which gives the magnet its magnetic field. Sometimes the molecules can align permanently, making a...

    The Characteristics of Magnetic Fields

    The Characteristics of Magnetic Fields

    by Claire Miller9

  • Ringworm is a dermatophyte, meaning a fungus that feeds on keratin: skin, hair, nails, etc. More specifically, ringworm feeds on the outer layer of skin and hair follicles and this causes the hair to become brittle and break....

    A Micrscopic Look at Ringworm

    A Micrscopic Look at Ringworm

    by HappyHerper1

  • Learn about the different species of alligators including the only two known living species that exist today: The American Alligator and the Chinese Alligator.

    The Different Types of Alligators

    The Different Types of Alligators

    by Melanie Shebel7

  • The atmosphere is a thin layer of gases surrounding the surface of the Earth. The gases composing the atmosphere are distributed in a layer of approximately 150 km (93 miles).

    What Elements Make Up the Earth’s Atmosphere?

    What Elements Make Up the Earth’s Atmosphere?

    by Jose Juan Gutierrez0

  • Japanese volcanoes are as beautiful as they are deadly. Here are 7 famous Japanese volcanoes that have inspired fear and love throughout the centuries.

    7 Japanese Volcanoes to Love and Fear

    7 Japanese Volcanoes to Love and Fear

    by Kuan Leong Yong0

  • This is an example of a proposal for addressing a clinical issue. The topic is the use of wearable devices for reducing fall risks in geriatric patients.

    Wearable Devices to Reduce Fall Risks

    Wearable Devices to Reduce Fall Risks

    by Vince0

  • Cicadas come out once every 13 or 17 years. I have learned a lot about Cicadas through my children and just being in an area that has tons of Cicadas.

    Interesting Facts About Cicadas

    Interesting Facts About Cicadas

    by caseymel5

  • An illustrated guide to some of the best-smelling flowers in the Hawaiian Islands. Includes colorful pictures and resource links.

    Fragrant Flowers of Hawaii

    Fragrant Flowers of Hawaii

    by TattooKitty11

  • Dinosaurs get all the glory. Their appeal often overshadows other species that existed with them. Non-dinosaur fossils reveal rare glimpses into reptiles, birds and mammals when T. Rex ruled.

    10 Rare Fossils of Species That Lived With Dinosaurs

    10 Rare Fossils of Species That Lived With Dinosaurs

    by Jana Louise Smit0

  • 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.

    Snakes Are Beautiful When They're in Pictures!

    Snakes Are Beautiful When They're in Pictures!

    by DarkSinistar10

  • The year 1905 is referred to as Albert Einstein's annus mirabilis (miracle year). Over the course of a year Einstein published four groundbreaking papers in physics. In doing this he announced his genius to the world and began his career as one of the world's most respected scientists.

    Why 1905 Is Considered Einstein's Miracle Year

    Why 1905 Is Considered Einstein's Miracle Year

    by Sam Brind0

  • Scores of people tinker in basements and garages trying to make the next big thing; sadly a lot of the effort only produces strange inventions that nobody needs.

    Weird and Wacky Inventions

    Weird and Wacky Inventions

    by Rupert Taylor3

  • It may read like science fiction, but these fascinating examples of insect behavior come from the dedicated study by the late Thomas Eisner, the Father of Chemical Ecology.

    How Insects Use Chemicals to Survive

    How Insects Use Chemicals to Survive

    by Catherine Tally14

  • Mark Lynas's "Six Degrees" is a modern classic, outlining potential effects of various levels of global warming. It's summarized, evaluated, and updated here, with links to 7 supplementary Hubs.

    Mark Lynas's "Six Degrees":  A Summary Review

    Mark Lynas's "Six Degrees": A Summary Review

    by Doc Snow10

  • The Copperhead is a dangerous pit viper found throughout the Southern United States. It is the smallest and least deadly of pit viper snakes, and should be avoided, but not killed for no reason.

    The Copperhead: A Venomous American Pit Viper

    The Copperhead: A Venomous American Pit Viper

    by Wesman Todd Shaw26

  • Honey bees are an amazing insect that is gaining support because of their importance in agriculture and producing food. Here are five interesting facts that most people don't know.

    5 Little-Known Bee Facts

    5 Little-Known Bee Facts

    by Chris Andrews9

  • Blue Jays are not only clever mimics, but highly intelligent birds that love day old bread. They have the reputation for being bully birds, and rightly so. But I don't think there's a prettier sight in the middle of winter than blue jays and cardinals in the snow!

    Blue Jays—Clever Mimics of the Bird World

    Blue Jays—Clever Mimics of the Bird World

    by Connie Smith27

  • The precision and accuracy of two-pan balances reached maximum efficiency when the Scottich Chemist Joseph Black (1728-1799) introduced a 'knife edge' as the fulcrum to an already ancient design.

    A Look at Analytical Balances: A Matter of Balance

    A Look at Analytical Balances: A Matter of Balance

    by Jamie Lee Hamann10

  • A neutrino is a unique type of subatomic particle that is more mysterious than the other more well known particles. How were they discovered and what are their possible uses in the future?

    What Are Neutrinos?

    What Are Neutrinos?

    by Sam Brind0

  • For hours I've searched for the ancient, semi-precious stone that fascinates my soul. I have been told there is nothing special about the agates found on the rock banks of Mississippi, but I disagree.

    Mississippi Agates

    Mississippi Agates

    by Karli Duran27

  • We used variable in our C program to store value but one variable can store only single piece information (an integer can hold only one integer value) and to store similar type of values we had to declare many variables. To overcome this problem we used array which can hold numbers of similar data type. But array too have some limitations, like in our real world application we deal with set of dissimilar data types and single array cannot store dissimilar data.

    Structures (struct) in C Programming

    Structures (struct) in C Programming

    by RAJKISHOR SAHU22

  • Involving many principles of science, this particular paradox follows a consequence of black hole mechanics and has far-reaching implications, no matter what the solution is.

    What Is the Black Hole Firewall Paradox?

    What Is the Black Hole Firewall Paradox?

    by Leonard Kelley1

  • What snakes live in Indiana? Are any of them venomous and/or dangerous? There are nearly 40 different species and subspecies of snakes that can be found in the Hoosier state. Although three out of the four front-fanged venomous snakes are endangered (Timber Rattlesnake, Cottonmouth, Eastern Massasauga Rattlesnake) and hard to find, the Copperhead is not. Although many Hoosier snakes are rear-fanged venomous, their venoms don't pose a significant threat to people.

    Snakes in Indiana

    Snakes in Indiana

    by ChristopherJRex3

  • Lapidary jokes, fossicking jokes, prospecting jokes, rockhound jokes, geology jokes and many more funny jokes, puns and short tales for lapidarians, rockhounds and jewellery enthusiasts.

    Lapidary Jokes for the Discerning Rockhound

    Lapidary Jokes for the Discerning Rockhound

    by Suzanne Day15

  • Lung compliance is the ability of the lungs to expand. Elastance measures the work that has to be exerted by the muscles of inspiration to expand the lungs. Factors affecting these are discussed here.

    Lung Compliance and Elastance

    Lung Compliance and Elastance

    by Chanaka Kahathuduwa1

  • Have you ever stopped and wondered why all the large and dangerous animals seem to live in Africa? Or why we seem to harbour an incurable fascination with monsters? The answers to these questions could well lie in our past, where our remote ancestors lived alongside Africa's real monsters...

    The African Megafauna

    The African Megafauna

    by James Kenny21

  • Gamma Ray Spectroscopy - An introductory review of germanium gamma ray detectors, and the spectroscopic methods used in the measurement of x-ray escape peaks, annihilation photons, peak summing, energy resolution, and total and photopeak efficiency.

    Gamma Ray Spectroscopy

    Gamma Ray Spectroscopy

    by Thomas Swan2

  • This is a basic guide to what you can see on the surface on the Moon - there is as much that can be seen on the Moon with a pair of binoculars, than in the whole of the rest of the sky put together.

    Astronomy - A Beginner's Guide to the Moon

    Astronomy - A Beginner's Guide to the Moon

    by Greensleeves Hubs15

  • A brief overview of the Everglades National Park and a look at some of the common, and not so common, bird species found there.

    Birds of the Florida Everglades

    Birds of the Florida Everglades

    by TMHughes1

  • This article looks at how mankind can terraform the moon and make it habitable. We'll talk about the current conditions, what needs to change, and how we might go about doing so. Comments welcome!

    Can We Terraform the Moon? A Second Home, Next Door?

    Can We Terraform the Moon? A Second Home, Next Door?

    by Will Henry9

  • Cape Buffalo are known as Black Death and feared and sought after by hunters. Can you tame a Buffalo? Read about my own encounter and learn more about these majectic beasts.

    Cape Buffalo—Facts and My Personal Encounter

    Cape Buffalo—Facts and My Personal Encounter

    by elnavann0

  • You are walking down the road when, "eek!" you fall into a huge pool of quicksand. There is nobody near enough to hear your cries for help. How will you escape? Can you really drown in quicksand? How can your practice escaping from quicksand from the safety of your own home? This recipe for Cornstarch Quicksand is very similar to the real thing, it is easy to make, and it even lets you walk on water.

    Will Quicksand Kill You?  The Science Of Goo: Cornstarch, Quicksand, Oobleck, And Non-Newtonian Fluids

    Will Quicksand Kill You? The Science Of Goo: Cornstarch, Quicksand, Oobleck, And Non-Newtonian Fluids

    by Lena Welch1

  • Long before either Abel Tasman or Captain Cook ever set eyes on Australia. The ancestors of today's Aborigines made a tricky sea voyage to an astonishing world full of weird and mighty beasts. This was a world crawling with monstrous marsupials, giant reptiles and huge flightless birds.

    The Australian Megafauna

    The Australian Megafauna

    by James Kenny16

  • The State of New York has a beautiful array of mushrooms and other fungi growing among the oak, maple, and beech forests. This photo gallery of orange and yellow mushrooms was taken in Frewsburg, a town in the "Southern Tier" of Western New York. Many of these mushrooms can be found in the wider Great Lakes geographical area.

    Pictures of Mushrooms in Western New York

    Pictures of Mushrooms in Western New York

    by Leah Lefler23

  • 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

  • Already a complicated subject, black holes get even weirder when viewed through the lens of string theory. Read on for some odd possibilities for what black holes really are.

    What Are Black Holes in String Theory?

    What Are Black Holes in String Theory?

    by Leonard Kelley0

  • Create beautiful custom control radio buttons and checkboxes for your iOS (iPhone, iPad) applications. Follow this simple tutorial to create radio buttons and checkboxes that fit the style of your app and requires very little code.

    Create Radio Buttons and Checkboxes for iOS Applications

    Create Radio Buttons and Checkboxes for iOS Applications

    by Kevin Languedoc22

  • Few people are aware of how black widow spiders contributed to the World War II effort, but they had a significant impact. In fact, a LIFE magazine article published on August 30thof 1943 credited each of several government employed arachnids with spinning between 100 and 180 feet of thread a week.This thread was then used to make cross hairs in the gunsights of U.S. Army instruments of war.

    American Black Widow Spiders Bring Victory in World War I and II

    American Black Widow Spiders Bring Victory in World War I and II

    by Pilar29

  • Lilia A. Abron is the first black woman in the U.S., and the third woman at the University of Iowa, to receive a doctoral degree in the field of chemical engineering.

    Black Women in STEM: Dr. Lilia A. Abron

    Black Women in STEM: Dr. Lilia A. Abron

    by Rachelle Williams2

  • What is a snake? Which snake is the most venomous or the longest? How can I identify venomous snakes in the US? These frequently asked questions (faqs) about snakes (and many more) are answered here.

    Frequently Asked Questions (FAQs) About Snakes

    Frequently Asked Questions (FAQs) About Snakes

    by ChristopherJRex15

  • The main property of a trapezium (as known in Great Britain) or trapezoid (as known in the United States) is that it is a 4 side shape with exactly one pair of parallel sides. Depending on how the trapezium is drawn determines how many lines of...

    Properties of a trapezium or trapezoid (math facts)

    Properties of a trapezium or trapezoid (math facts)

    by Mark0

  • Why is the sky at night dark if stars are everywhere? Read on to find out the surprising answer!

    What Is Obler's Paradox?

    What Is Obler's Paradox?

    by Leonard Kelley3

  • The extinction of the dinosaurs marked the end of one era, but heralded the beginning of another. It only took the Earth a few million years to recover from the after effects of the asteroid impact, but it was a changed world. This hub profiles one small corner of that world, in a time called the Eocene...

    After The Dinosaurs: Life In The Eocene

    After The Dinosaurs: Life In The Eocene

    by James Kenny47

  • There are now many invasive insect species in Britain, and they can have a big impact on the environment. So let's have a look at what damage they cause and how they are affecting native species

    Problems Caused by Invasive Insect Species in the UK

    Problems Caused by Invasive Insect Species in the UK

    by AnimalWrites12

  • The top 5 scariest and deadliest bugs on this earth. A list compiled from many sources to deliver to you a nightmare-inducing read that will surely have you quaking in your boots.

    5 Badass Bugs—Scariest Insects on Earth

    5 Badass Bugs—Scariest Insects on Earth

    by George Lancaster10

  • This is part one of a two part article on Pressure Ulcers (also known as "bed sores"). It covers the cause and stages of the condition. Warning: Imagery may be disturbing.

    Pressure Ulcers: Cause

    Pressure Ulcers: Cause

    by Vince0

  • Located in Northern Ontario, Algonquin Park is home to over 2000 black bears. We'll learn about black bears facts, habitat and bust some myths surrounding the black bear.

    The Black Bears of Algonquin Park

    The Black Bears of Algonquin Park

    by JessBraz10

  • 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 McKenney3

  • The science of artificial intelligence has embraced the art of writing and reporting with the founding of Narrative Science, a company that is pioneering the science of automatic writing. This article explains how it will have a dramatic impact on journalism as we know it.

    Artificial Intelligence and Automatic Writing

    Artificial Intelligence and Automatic Writing

    by Russ Moran - The Write Stuff30

  • One of the most important theories in physics is Albert Einstein's theory of special relativity. The theory of special relativity (and its equations) explained how space and time are actually intrinsically linked to each other, instead of being two separate concepts.

    What Is Special Relativity?

    What Is Special Relativity?

    by Sam Brind0

  • The animals of the sea are playful and beautiful in their own special way. Learn about these remarkable aquatic animals - some of the largest in the world - manatees and dugongs.

    Dugongs Mermaids and Manatees

    Dugongs Mermaids and Manatees

    by Kelly Kline Burnett8

  • 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

  • A comparison of the early growth of beans (dicot) versus corn (monocot). Tim Downey As you undoubtedly know, flowering plants are frequently separated into two different classes: the dicots and monocots. Apart from some superficial differences, such...

    How Do Seeds Germinate? Monocots vs. Dicots

    How Do Seeds Germinate? Monocots vs. Dicots

    by lumberjack3

  • Different snakes may contain different types of venom compounds, with small-scale shifts in venom composition possible within an individual snake due to age, diet, environment/captivity, and season.

    Snake Venom Composition and Variability

    Snake Venom Composition and Variability

    by ChristopherJRex4

  • Having trouble with naming chemical compounds? Perhaps you're taking a General Chemistry class in college. I take you through naming step-by-step with discussion and examples!

    Steps to Naming Ionic and Covalent Compounds

    Steps to Naming Ionic and Covalent Compounds

    by phriot12

  • This article will take a close look at the differences between open and closed motor skills, while also providing photographic examples of what each of these skills looks like.

    Closed Motor Skills vs. Open Motor Skills

    Closed Motor Skills vs. Open Motor Skills

    by CCahill0

  • Arriving at work shortly after sunrise on a recent spring morning my wife noticed a beautiful white flower on one of the cacti in the gardens on the grounds where she works. Unlike many other species of cacti, such as the majestic saguaro or the...

    Peruvian Apple Cactus and Its Night Blooming Flowers

    Peruvian Apple Cactus and Its Night Blooming Flowers

    by Chuck Nugent9

  • This article summarizes the threat that asteroids and comets pose to the Earth. A short history of some of the greatest asteroid impacts on Earth is also provided.

    Will an Asteroid Strike Planet Earth?

    Will an Asteroid Strike Planet Earth?

    by Kelley43

  • The history of life series moves on to the period where not only complex lifeforms evolved, but came to take over the world. But they didn't have everything their own way, the Paleozoic era bore witness to natural disasters that make our problems seem minute...

    A History Of Life On Earth: The Palaeozoic Era

    A History Of Life On Earth: The Palaeozoic Era

    by James Kenny29

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