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The Rockin' State Fossils Quiz
science.howstuffworks.com/environmental/earth/geology/state-fossils-quiz.htm
One of America's national treasures is its diverse and bountiful fossil record. Take our U.S. states fossils quiz to learn more about fossils.
How Megalodon Worked
animals.howstuffworks.com/extinct-animals/megalodon.htm
The megalodon was born as big as an adult great white and grew to weigh as much as 7 Tyrannosaurus rex. Learn all about the megalodon.
How Woolly Mammoths Worked
animals.howstuffworks.com/extinct-animals/woolly-mammoth.htm
Hop in your time machine, set the clock back a few thousand years and meet some woolly wonders. They even have a few things to teach us about the fate of modern elephants.
Can You Identify the Dinosaur from an Image?
play.howstuffworks.com/quiz/can-you-identify-the-dinosaur-from-an-image
They aren't known as the sharp tooth and the three-horn. These dinosaurs have some pretty intense names. Do you think you can identify all of them if we show you a picture?
Think Dimetrodon Was a Dinosaur? Think Again
animals.howstuffworks.com/extinct-animals/dimetrodon.htm
Dimetrodon may look for all the world like a dinosaur, but in reality, was a member of the same clade, or group of animals, that gave rise to mammals.
The Titanosaur Family Was the Largest to Ever Roam Earth
animals.howstuffworks.com/dinosaurs/titanosaur.htm
That's the titanosaur, one of the largest land animals to ever exist, dwarfing nearly everything around it. Roaming the planet during the Late Cretaceous period — approximately 100 million years ago — titanosaurs are part of a family of sauropod dinosaurs known for their massive size, long necks and incredible diversity.
Eve Gene: Do We All Descend From a Common Female Ancestor?
science.howstuffworks.com/life/evolution/female-ancestor.htm
A common female ancestor could be what all humans can trace their lineage to. Learn more about the common female ancestor and Mitochondrial Eve.
How Much Do You Know About Diesel Engines?
play.howstuffworks.com/quiz/how-much-do-you-know-about-diesel-engines
The modern diesel engine is no longer the black smoke, difficult to start, noisy engine that it was a few decades ago. Modern diesel engines are efficient, powerful and above all, use far less fuel. But just how much do you know about engines run by an alternate fuel source?
Scary Prehistoric 'Hell Pigs' Once Roamed the Earth
animals.howstuffworks.com/extinct-animals/prehistoric-hell-pigs-once-roamed-earth.htm
These super-frightening entelodonts (aka hell pigs) once patrolled throughout Eurasia, North America and Africa.
What Would a Yellowstone Eruption Mean for North America?
science.howstuffworks.com/science-vs-myth/what-if/what-if-yellowstone-supervolcano-erupted.htm
Welcome to Yellowstone, a natural wonderland that's home to stunning vistas, vibrant plant and animal life ... and a massive and potentially devastating supervolcano.