The heterozygote advantage is shown in several genetic diseases: cystic fibrosis heterozygotes are resistant to cholera, thalassemia trait confers a benefit for coronary artery disease.
Find all about palm trees, how they grow, flower, fruit and the uses people make of these marvelous plants...
The rainbow eucalyptus is an unusual tree with a beautiful, multicoloured trunk. The trunk's colours change as the tree sheds strips of bark, creating living art.
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.
The dawning of Age of Aquarius is more than just a lyric from a 1970s musical. It is a very real astronomical phenomenon that will occur in the not too distant future. To understand when this new age will occur requires a bit of understanding of the constellations of the Zodiac, as well as the dynamics of Earth's orientation in the Solar System that cause the astrological age to change over time.
Green eyes are very rare. This hub will help explain some of the traits and factors that contribute to them.
My attempt to satisfy the question 'Can Life Exist in the Sirius Star System'. I hope you find it educational and enjoyable as I did doing the research
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!?
The orangutan is one of our closest relatives, and yet we know comparatively little about them. They are an animal, that we need to learn more about, because maybe knowing more about them will helps us understand ourselves better. Hopefully, we can do this before it's too late...
This article aims to answer some tricky chemistry questions I have come across in my experience as a high school teacher: What is an acid? How do fireworks change color? How do glow sticks work?
Hydrochloric acid is made in the stomach and is a helpful chemical. However, too much or too little acid or acid in the wrong place can cause problems.
Did you know that wild ginseng root can actually be found right here in America's national parks and private woodlands?
The great horned owl is an avian apex predator. Possibly this bird is the finest predator to have ever lived.
Examining what it means to have Irish blood, outlining where Irish DNA comes from and who are the closest genetic relatives of the Irish in Europe. Of interest to anyone with Irish ancestry who wants to understand their genealogy.
Although cockroaches are often seen as disgusting creatures, there are a lot of fascinating truths and fun facts you still don't know about them. Learn more about this amazing creature here.
See pictures to help you identify the male and female Rose-breasted Grosbeak, plus learn facts about its migration and behavior.
Everyone know about the physical differences between mean and women. But why are they different anatomically? The answer lies just below our skin in our blood and other cells in the body.
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.
There are so many different types of fungi in the world. Almost all of them are beneficial. Find out about them here and enjoy some beautiful pictures...
Green, huge caterpillars in Arizona gardens have many enemies not the least of whom are the gardeners. If these hornworm caterpillars survive and pupate, they become moths with hummingbird skills.
The developing world has a large number of people living with HIV/AIDS. Learn about the factors influencing the spread of HIV/AIDS in the developing countries, and see some ways to stop the epidemic.
When I meet someone for the first time, I always notice their eyes. Here are some cool Facts about People with Green Eyes.
Rat snakes are non-venomous reptiles that are good climbers and eat rodents and other vermin. They are found all over Louisiana.
The monkey puzzle tree is a very strange and interesting plant. It's native to South America but grows in parks and gardens in other areas as an introduced plant.
Nemesis Theory says there is a second sun in our solar system, a death star that will one day cause mass extinction on Earth . . .
Some think there are none, but this is a complete listing of all recorded shark attacks in British waters which may surprise you!
Plants have a reputation for being motionless, passive and boring. These 20 plants challenge this mundane stereotype. I threw in a few fungi; I cheated a little. Enjoy!
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.
This hub is all about calculating lottery probability or odds. In order to make it relevant, I decided to base it on the Grandlotto 6/55, the lottery game with the biggest prize money here in the Philippines. There will be two different cases in the hub: the probability of winning the game with all six numbers matching, and the probability of having n numbers matching.
Spiders are very beneficial and should not be killed. This article provides some interesting scientific facts about spiders, along with their symbolism.
A complete list of all the sharks found in the Mediterranean Sea, with a separate list of sharks dangerous to humans.
The Sunshine State has all sorts of over-sized bugs and creep-crawlies. This article looks at the biggest spiders in Florida.
A current transformer is an instrument transformer, used along with measuring or protective devices, in which the secondary current is proportional to the primary current (under normal conditions of operation) and differs from it by an angle which is approximately zero.
Cougars and an unidentified large black cougar-like cat have been sighted in North East North Carolina as recently and September 2011.
Discover some of the theories and ideas of one of the most unique minds of our time: Stephen Hawking. This is also a brief biography and bibliography of that brave and original soul.
The respiratory system is an amazing and intricate network of tubes and sacs. Here are some surprising facts related to breathing, gas exchange, and sneezing.
Many animals take to the air to fly or glide. Some 'balloon' thousands of miles on the wind. This page explores the most impressive examples...
Snakes are fascinating reptiles that have a wide variety of appearances and behaviors. Some snake characteristics are both strange and surprising.
Step-by-step instructions for 4 different science experiments using Skittles candies. Easy, quick and fun!
Regression equations are frequently used by scientists, engineers, and other professionals to predict a result given an input. These equations have many applications and can be developed with relative ease. In this article I show you how easy it is to create a simple linear regression equation from a small set of data.
Was the Big Bang a single event, or had the development of the universe failed repeatedly until the one we now live in? Is this the final version or does the process occur an infinite number of times into eternity?
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 Most Beautiful Animals In The World--These unusual species and wonders of evolution are illustrated with pictures and facts.
What were the most destructive natural disasters in the history of our planet? Earth has weathered many hurricanes, earthquakes, and tsunamis. Are humans responsible for some of these disasters?
Biological perspective links the studies of biology and psychology. Physiological changes and genetics are believed to play a large role in the behaviors of humans and other animals. Biological perspective is the study in psychology that evaluates the physiological and genetic roots of behaviour.
Tsunamis cause have whenever they hit - death, destruction and carnage. Find out the exact effects on land and in the sea.
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.
Honey bees are very smart despite having tiny brains. They can learn; they have good memories, and they can communicate using a unique symbolic language.
A handy guide for identifying various types of clouds including information on what makes clouds look different, which are responsible for storms, and how some clouds can help in predicting weather.
Osteoblasts and osteoclasts control the production and disintegration of bone and the amount of calcium released from the bones into the bloodstream.
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.
We experience many Boyle's law applications in real life every day. Most people don't know it, but an example of Boyle's law is responsible for every moment we are alive.
Oregon grape is an attractive plant with edible berries. The plant contains berberine, which may have important health benefits.
Blood clotting or coagulation is a complex process that helps us survive when we're injured. Fibrin threads trap blood cells and stop blood loss.
Commercial farming of one of the world’s most popular types of seafood is causing environmental degradation on a large scale and is a potential source of health issues.
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.
What makes the Cretaceous sea worse than any other in history is that there isn't just one predator to worry about, but a whole collection of them, including sharks, lightning fast killer fish and fearsome giant marine reptiles called mosasaurs.
Lichens are interesting organisms that are important in their environment and useful for humans. Some produce chemicals that are potentially dangerous for us, however.
There are many different types of plants, ranging from grand trees to tiny algae. This is an overview with pictures.
Eurasian Eagle Owls have made a comeback in the UK. Discover some interesting facts about the Eagle Owl; behavior, reproduction, habitat and why the Eurasian may become threatened again.
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.
Considered by Einstein to be his "greatest blunder," it in fact may describe the mysterious expansion of the universe.
Different Types of Stars in the Universe - Physical characteristics and images of the many different kinds of stars, from red giants to white dwarfs.
Here are the tales of ten species that succumbed to anthropogenic extinction as a result of hunting or habitat destruction.
Have you ever discovered a snake in the wilds of Indiana and wanted to be able to identify it? Use this dichotomous key, which includes the most common physical characteristics of adult snakes.
65 million years ago, a massive asteroid crashed into the Earth. It wiped out 70 per cent of all life, including the most successful, the dinosaurs. But what if the asteroid had missed? What would the world be like today, if the dinosaurs had survived...
Because caffeine is a substance used by the young and old in every country and on every continent, it affects billions.
In small quantities, nitric oxide has important functions and health benefits in our body. In large amounts, however, it's toxic to nerve cells.
If you see yellow garden spiders in the landscape, don't squash them! Be thankful. Argiope aurantia are large, bright & beautiful beneficial predators. They are also a sign of healthy garden ecology.
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.
A straightforward guide to drawing graphs in KS3 and GCSE science coursework and exams. Points out common pitfalls and shows a step-by-step guide to drawing these mark-rich answers perfectly
Mechanics is a branch of physics which deals with forces, mass and motion with applications in engineering construction, the design of machines, ballistics and space travel.
How many eyes does a spider have? Why do they need so many eyes? Find these answers and see beautiful pictures of spiders' eyes.
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.
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.
The dumbest smart jokes, the stupidest funny answers. These are the best of the worst math puns and wisecracks!
North America is home to four native species of wildcats. Learn more about the wildcats of North America with pictures and videos.
Serendipity is a happy and unexpected event that seems to occur by chance. It's often called a “lucky accident”. Serendipitous discoveries are important in science.
A detailed guide on how to make litmus paper using red cabbage to test whether substances are acidic or basic. Bases turn green or blue whilst acids turn it red.
Evolution has produced a multitude of predators down the ages, but which were the deadliest of all time?
What different species of animals can interbreed and how is it possible? From mules to ligers learn all about hybrids in this comprehensive article.
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.
Our skin is an impressive organ that has many functions. For example, it reduces water loss, fights infections, helps regulate body temperature, and makes vitamin D.
This is a list of 27 basic pieces of laboratory equipment you would find in a general chemistry lab. Each is named, explained, and shown in a picture.
What are the most dreadful earthquakes of India. Below is the list of biggest earthquakes of India with images.
If you found a black or dark-colored caterpillar, this quick and easy guide can help you identify it.
The lamprey is a frightening eel-like parasite, but could they really attack humans? Here's a look at this monster of nightmares.
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.
Great wild mushroom photos! Learn why mushrooms and fungi are important and what they do in addition to providing food.
Unique and rare Septarian brown stones among other types are found along a narrow stretch of Lake Michigan shorelines. Find out the one other place in the world they can be found.
Learn facts about the real Megalodon shark and get answers to frequently asked questions about the biggest shark that ever existed!
The Himalayan blackberry is a beautiful plant in spring and summer. It produces delicious blackberries, but it's an invasive species and grows aggressively.
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.
Mucus has vital functions, such as trapping germs in the airways, protecting the stomach lining from an acid attack, and lubricating the passage of materials through the digestive tract. Excess mucus can cause health problems, however. Mucus in the nose is often referred to as snot.
This article discusses the various components of a power transformer and briefly explains how they work.
Mudskippers are unusual fish that may spend more time on land than in water. They use their pectoral fins as legs and breathe through their skin as well as their gills.
Cockroaches. They may be icky but they've got a lot of tricks up their hard little sleeves and you might be shocked to know what they're capable of and where they came from. Turn your repulsion to fascination right here with one click. I dare you.
Test which surfaces create more friction, see how strong friction is, learn how to reduce friction, and even discover the side effects of friction. There are sliding friction experiments, a phone book friction experiment, a way to make rice stick together, an experiment to create frictional heat, and lots more friction experiments for all ages.
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.
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!
Where are the world's supervolcanoes? The Western United States, Italy, New Zealand, and Asia all contain volcanoes capable of catastrophic eruptions.
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.
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....
There are so many different types of crabs around the world. Find out more about these fascinating animals here.
The mucus that covers fish has several functions, including protection from multiple dangers and serving as food for young fish. The substance may also be useful for us.
If you have red hair or blue eyes, then you're a mutant. There's nothing you can do about it except read this page to find out why nature selected you for mutantdom.
Among natural hazards and disasters, earthquakes are the most dangerous and disastrous happenings on the earth's surface.
Researchers are embarking on studies that show a correlation between the color and pattern of the human eye iris and personality and intelligence. What do your eyes tell the world?
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
If you were designing a bomb shelter to prepare for the end of the world, what kind of metal would you build with? Find the smartest answer here.
Horsehair worms are long and slender animals that writhe and form shapes resembling knots with their body. They are parasites during part of their life cycle and at one point control the behaviour of their host.
Here's the old-fashioned way of using HTML and CSS codes to tile graphics side-by-side on a webpage. Handy for photo galleries, strips of buttons, or other kinds of images arranged in a grid.
The hedge bindweed or morning glory twines around other plants and interferes with their growth. Bindweed produces large and beautiful flowers in summer.
A solar flare in 1859 caused power spikes and disrupted the world's telegraph system. How much damage could a massive solar flare do to power and communications today?
Earwax is made by the lining of the ear canal and has important functions. An adequate amount of wax is necessary, but too much can lead to impaction and pain.
Learn how to identify species of palm trees can be very useful when deciding which species to plant in your area. By studying the characteristics and USDA Climate Zones, your garden can be an oasis.
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...
Marmots are large ground squirrels that live in mountainous areas of British Columbia. They are social and very vocal animals that often form colonies. Three species of animals are commonly known as marmots in BC. One of them—the Vancouver Island Marmot—is critically endangered.
Large and fascinating birds, American black vultures live in the southern USA and are common in Central and South America.
Gas is one of the three forms of matter. Every known substance is either a solid, liquid or a gas. These forms differ in the way they fill space and change shape. A gas, such as air has neither a fixed shape nor a fixed volume and has weight.
In this article, you will find a comparison of the Sun's size with the largest stars in the Milky Way. You will really be surprised how big some of these stars are with respect to the Sun or how small the Sun is to them.
The difference between the colossal and giant squid, the real sea monsters that spawned the kraken legend, is about more than just size!
At least 1000 types of fish—and probably many more—produce sounds. These sounds include pops, clicks, purrs, grunts, hums, hoots, rattles, and tinkles.
Landfills are the method of choice for disposing of the world's garbage. By means of a comprehensive chart, you will be able to learn about fifteen of the largest landfills in the world.
The oceans contain a vast variety of creatures. Here are some marine animals whose names span the alphabet from A to Z.
The White Peacock is as vain as it's colorful counterpart. Truly a magnificent bird, bearing the dazzling color of white.
What are the most dangerous scorpions in the world? All of them look deadly, but there are only a few who can do any real damage. Here is a rundown of the deadliest scorpions in the world.
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.
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.
The deadly nightshade plant, or belladonna, is extremely poisonous. It contains atropine, which is potentially dangerous but has important medical uses.
What is the difference between tRNA and mRNA? How does a cell make only the proteins it needs?These questions are answered as we explore the stages protein synthesis - the process of Protein Production.
There are four species of owls native to North Carolina. These owls and their distinctive calls are captivating creatures.
Formic acid is found in the sprayed venom of some ants and the secretions of some stinging nettles. The acid is dangerous at high concentrations but has important uses.
Keeping your favorite recipes organized is a challenge for many of us. Create your own recipe database and never have to hunt for your recipes again.
More than half of PhD students leave physics after earning their degree. The reasons include a lack of financial reward or job security.
Luna Moths are beautiful creatures. You will want to look closely at the photo and see the eye spots on the top wings as well as underneath. Find out more about this fascinating and large moth!
IUCN has declared 418 animal species in the Philippines to be either vulnerable or endangered. This article lists the top 50 critically endangered animals in the Philippines.
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.
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.
A set of fun experiments that teach kids the fun of chemistry and how to tell a chemical change from a physical change
If you are worried about the possible presence of dangerous sharks in British waters, you may feel somewhat reassured by how few there really are. Out of the 29 different types of sharks that have been spotted around Britain's coastline, there are only 7 potentially dangerous sharks, not including the great white whose sightings have never yet been confirmed, but are highly suspected of being present.
Need to align a graphic on a webpage? Are you trying to put captions under your images? Here's the codes you need to make things work.
Have you wondered what triggers yawning, or why you have to yawn when you see someone else yawn? Check out this article for interesting facts about yawning.
While the fearsome great white shark can grow to a massive 20 feet, most are much smaller. But what is the biggest one ever found?
There are many extinct animals that once lived in the rainforest, and many more that are endangered. We, who have the best capability of protecting these animals, should take actions to preserve life.
We might not be able to clone dinosaurs but did you know we are looking into "reverse engineering" them? And cloning more recently extinct animals?
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.
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!
Some of the coolest, most fascinating organisms are just now being discovered by scientists, and not only at the bottom of the ocean, either.
Northern Cardinal birds inhabit most of North America. Photos of the mating and nesting behavior of this striking red bird.
A lot of people confuse locusts with cicadas, but they actually differ in many ways. Here are a few of the main differences.
Ballistics is a branch of mechanics which deals with the motion of projectiles launched into the air or space. Solving these type of problems involves using Newton's equations of motion
This guide to laboratory signs and their meanings has a detailed description to each sign and symbol, with photos. A must read for anyone working in a laboratory with hazard signs...
Learn some facts about common songbirds of Pennsylvania and view pictures to help you identify and attract the birds in your backyard.
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?
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.
Dark matter and dark energy are still huge mysteries in astrophysics. Alternate theories exist to help explain them.
Although human blood is usually red it may have a different color, which indicates the presence of a health problem. Animals have a wide variety of blood colors.
How to convert a hexadecimal to a decimal and a decimal to a hexadecimal without using any calculators or special knowledge.
A guide to the best places in the world to see wild tigers, such as Bengal tigers in India's national parks or Sumatran tigers in Indonesia.
Which prehistoric monster ruled the ancient sea, the Megalodon shark or Livyatan (Leviathan) Melvillei, the massive predatory whale?
Cone snails use their venom to paralyze their prey. Although the venom is often dangerous for humans, it contains chemicals that have important medical uses.
This article suggests a list of the thirteen greatest airplanes of all time, emphasizing the importance of each during its time and place in world history.
Identify that furry or fuzzy caterpillar you found with the help of this quick, easy, and authoritative guide.
Puffins are most people’s favourite sea bird, and Scotland has plenty of great places to view them. Whether you are a visitor or native to Scotland, this article shows you where to go. And it’s filled with cute photos!
The rapid development of land for use by humans all over Asia poses a serious threat to many animal species, and many Asian governments do too little too late to protect their own environments.
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.
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...
Most commonly, you see brown, blue, or hazel eyes, but some people, whether it be luck or a medical condition, wind up with really cool and rare eye colors.
The urinary system is the excretory system of the body. The nephron does all the work of the Urinary System. Find out how the nephron works.
When we think of meat-eating plants, The Little Shop of Horrors often comes to mind, but there are many different carnivourous plants. Some "swallow", like Audrey II, others function differently.
The human skeleton has vital functions. It provides support and protection, allows us to move, makes blood cells, and stores fatty acids and minerals.
There are many endangered species, including the Siberian Tiger, elephants, leather-back sea turtles, snow leopards,
Australia has a reputation for being home to many of the world's most dangerous animals. Here is a top ten list of the most deadly.
Unripe lychees and ackee fruits contain toxins. Both fruits should be eaten only when ripe. In addition, it's very important that ripe ackee is prepared properly.
Because of human destruction of their habitats, species whose geographical range is small are at the greatest risk of being endangered. Here you'll find a list of ten of the most endangered animals.
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.
The black widow and the brown recluse are the only two poisonous spiders in North Carolina. Good housekeeping can reduce the risk of being bitten by them.
Do wild cheetahs attack, kill, or eat human beings? This article answers this question and provides more information about these extraordinary animals.
A pair of Eastern Bluebirds make their home in a backyard nesting box. Photos of bluebirds, bluebird nests and baby bluebirds included. Tips on attracting bluebirds to your backyard.
Tiny microplastic particles are produced from plastic waste. The particles enter the human body in a variety of ways. Their effects on the body are unknown.