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We Know Far Less About Sharks Than You Might Think
animals.howstuffworks.com/fish/sharks/unanswered-science-questions-shark-research.htm
What are the big questions in shark research? Learn more about what we don't know about sharks in this HowStuffWorks Now article.
10 Types of Lions (Including 4 Extinct Species)
animals.howstuffworks.com/mammals/types-of-lions.htm
Lions, one of the most iconic big cats in the animal kingdom, belong to the species Panthera leo, but not all lions are the same. There are several recognized subspecies, each adapted to a specific region and environmental conditions.
How Far Is Russia From Alaska?
science.howstuffworks.com/environmental/earth/geophysics/how-far-is-russia-from-alaska.htm
Sarah Palin never really said she could see Russia from her house. But how far is Russia from Alaska anyway? And can you see one country from the other?
Can You Identify These Lizard Species?
play.howstuffworks.com/quiz/can-you-identify-these-lizard-species
We may not have dinosaurs in the world anymore but we do have lizards. Lots and lots of lizards! Let's see you flex your herpetology muscles and name as many of these species as you can!
How much do you know about summer solstice?
play.howstuffworks.com/quiz/how-much-do-you-know-summer-solstice
From its pagan and its religious roots to the mystery of Stonehenge and other ancient sites, the summer solstice has meant many things to many people on this planet. See how much you know about when and why the summer solstice happens, and why it's been considered a magical time of the year.
10 Cretaceous Animals That Weren't Dinosaurs
animals.howstuffworks.com/animal-facts/10-cretaceous-animals-that-werent-dinosaurs.htm
The dinos hog all the Cretaceous headlines. Do you have any idea what else scurried, hopped and otherwise cruised around Earth before the K-T mass extinction?
Can You Identify These Snakes?
play.howstuffworks.com/quiz/can-you-identify-these-snakes
Whether you're a budding herpetologist who loves nothing more than watching a forked tongue flicker, or you're deathly afraid of coming face to face with a snake in your own yard, knowing how to identify snakes can be a huge help. Take our quiz to see how many you can name.
20 Most Common Surnames in the U.S. (and What They Mean)
people.howstuffworks.com/culture-traditions/genealogy/most-common-surnames-in-the-us.htm
Ever wonder what your last name says about your family's story? Turns out, some of the most common surnames in the U.S. reveal more than just ancestry; they hint at migration patterns, occupations and cultural influence across generations.
How Pangaea Became 7 Separate Continents
history.howstuffworks.com/world-history/pangaea-supercontinent.htm
The idea of Pangaea comes from Alfred Wegener's hypothesis that the seven continents were once joined as a supercontinent. Learn more about Pangaea.
Freshwater Snails: Helpful Carriers of Harmful Parasites
animals.howstuffworks.com/marine-life/freshwater-snails.htm
You might think of snails as the little shelled creatures that you find crawling in your garden, or even as a delicacy of French cuisine, where they are called "escargot." But there are snails that live in the water, too, including marine snails in the tropical oceans and freshwater snails found across the world in ponds, lakes and rivers.