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  • NASA and SpaceX plan to colonize Mars within the 21st century. They are preparing ships, cargo, and crew for an intergalactic voyage mid-2030. Here is everything you need to know about living on Mars.

    Everything You Need to Know About Colonizing Mars

    Everything You Need to Know About Colonizing Mars

    by JourneyHolm3

  • 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 Hewins52

  • Draco lizards are sometimes known as flying dragons. They have a skin fold on each side of their body that extends to form a wing-like structure and enables the animal to glide through the air.

    Draco Lizards and Flying Dragons: Strange Reptiles

    Draco Lizards and Flying Dragons: Strange Reptiles

    by Linda Crampton37

  • 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.

    Mucus in the Human Body: Functions and Health Problems

    Mucus in the Human Body: Functions and Health Problems

    by Linda Crampton51

  • 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 Goodman92

  • Shoebill storks, or shoebills, have a huge and impressive bill. The animal's unusual features make it a unique bird. Its population has been classified in the "Vulnerable" category of the IUCN's Red List.

    44 Interesting Facts About the Strange Shoebill Stork

    44 Interesting Facts About the Strange Shoebill Stork

    by Linda Crampton39

  • We know that everyone's DNA is unique, but do you know exactly how forensic scientists tell people apart from their DNA? In this article, we explore the concept of microsatellites (or STRs) and apply this knowledge to tackle an exciting mock case example with riveting twists and turns.

    How Does Forensic Dna Profiling Work?

    How Does Forensic Dna Profiling Work?

    by James Liang0

  • This is the third page in a series of guides for anyone who wants to learn a little more about our night sky. This page looks at those most numerous of all objects visible in the night sky - the stars

    Astronomy—A Beginner's Guide to the Stars

    Astronomy—A Beginner's Guide to the Stars

    by Greensleeves Hubs10

  • Are you curious about what a group of cats is called? A group of owls or a group of sheep? Find your answers here. From mammals to amphibians to insects—discover the many interesting group names for animals, otherwise known as "collective nouns." Happy learning!

    Names for Groups of Animals and Insects

    Names for Groups of Animals and Insects

    by Layne Holmes2

  • The bunya pine produces huge and often very heavy cones. Its large seeds are both edible and tasty. The tree has a strange appearance and some unusual features.

    The Bunya Pine: A Strange and Useful Tree

    The Bunya Pine: A Strange and Useful Tree

    by Linda Crampton108

  • 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 Crampton54

  • Exciting disciplines that combine biology and math include biostatistics, epidemiology, bioinformatics, mathematical biology, and population ecology. The disciplines offer interesting careers.

    Careers That Combine Biology and Mathematics

    Careers That Combine Biology and Mathematics

    by Linda Crampton50

  • Rats carry the same levels of unpopularity as spiders and snakes. probably as the result of ancestral memories of bad experiences with the rodents.

    Rats: The Bad and the Good

    Rats: The Bad and the Good

    by Rupert Taylor0

  • 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 Lefler20

  • The pancreas makes a digestive enzyme called trypsin, which digests protein in the small intestine. Trypsin is normally released in an inactive form but sometimes becomes active within the pancreas. This activation may cause pancreatitis.

    The Pancreas: Trypsin, Protein Digestion, and Pancreatitis

    The Pancreas: Trypsin, Protein Digestion, and Pancreatitis

    by Linda Crampton40

  • 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

  • Michael Faraday, the son of an 18th Century blacksmith, became one of the greatest scientists of his age. One of his discoveries transformed the world and changed the way we live forever.

    Michael Faraday for Kids: His Life, Work, and Legacy

    Michael Faraday for Kids: His Life, Work, and Legacy

    by Amanda Littlejohn57

  • Acanthamoeba is a microscopic, single-celled organism that can infect the cornea of the eye. It causes a disorder called Acanthamoeba keratitis, which is most common in contact lens users.

    Acanthamoeba Facts, Eye Infection, and Keratitis

    Acanthamoeba Facts, Eye Infection, and Keratitis

    by Linda Crampton40

  • 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

  • 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

  • Gold has fascinated humans since it was first discovered. It has inspired love, poetry, art and music as well as greed, murder and warfare. Discover about gold with these amazing facts, pics, videos!

    Top 10 Interesting and Fun Facts About Gold

    Top 10 Interesting and Fun Facts About Gold

    by Amanda Littlejohn75

  • 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 Nuamah3

  • 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 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 Goodman12

  • 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 Lefler105

  • 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

  • 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

  • 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

  • Have you have considered the power potential of the human body? What about the energy stored in a raindrop? In this article I discuss five strange methods that could one day become an integral way that civilization generates electricity.

    Five Alternative Forms of Energy You Have Never Heard of

    Five Alternative Forms of Energy You Have Never Heard of

    by Christopher Wanamaker28

  • 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.

    The Fascinating Truth About the World's Oldest Pests: Cockroaches

    The Fascinating Truth About the World's Oldest Pests: Cockroaches

    by Theophanes Avery26

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