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7 Scary Extinct Animals That Were Absolute Terrors
animals.howstuffworks.com/extinct-animals/10-terrifying-extinct-cetaceans.htm
If you thought sea monsters were just the stuff of myth, you thought wrong. With giant, razor-sharp teeth, ancient cetaceans - the ancestors to modern whales, dolphins and porpoises - make even nightmares seem dull.
Is there such a thing as a truly unselfish act?
science.howstuffworks.com/life/evolution/unselfish-act.htm
An unselfish act is an act in which one person benefits while the person performing the act gains nothing. Find out if an unselfish act is possible.
Why are humans altruistic?
science.howstuffworks.com/life/inside-the-mind/emotions/humans-altruistic.htm
Why are humans altruistic? Even when it might hurt us? See concepts and ideas on why humans are altruistic at Discovery Health.
Why Are Pandas Endangered?
animals.howstuffworks.com/endangered-species/panda-population-habitat-livestock-2017.htm
Panda populations are flourishing, and that's good news. But with the threats of infrastructure and livestock, can that trend last?
When will life on Earth end?
science.howstuffworks.com/life/evolution/life-on-earth-end.htm
Imagine a time in Earth's far-flung past when organisms didn't swim through the oceans or populate the lands. Even the mighty dinosaurs hadn't arisen. Will the planet ever return to that lifeless state?
How the Ancient Land Blob Gondwana Became Today's Continents
science.howstuffworks.com/environmental/earth/geology/gondwana.htm
Gondwana was a humongous landmass that persisted for 300 million years before it began to break up, forming all the continents in the modern Southern Hemisphere.
How Much Do You Know About Latin America?
play.howstuffworks.com/quiz/how-much-do-you-know-latin-america
Latin America is a patchwork of different cultures, beliefs, languages and backgrounds. Some of the facts about Latin America will be clear, while others will astound you. Let's separate the ignorant from the know-it-alls.
5 Major Rule Changes in the History of Baseball
entertainment.howstuffworks.com/5-major-rule-changes-in-history-of-baseball.htm
What are some of the major rule changes in the history of baseball? Learn about the major rule changes in the history of baseball at HowStuffWorks.
How Harley-Davidson Works
auto.howstuffworks.com/harley.htm
Harley-Davidson is the most popular brand of American motorcycles. Find out what sets Harley-Davidson apart from other bikes and how Harley-Davidson engines evolved.
The Mysterious World of Voodoo Dolls: History, Myth, and Reality
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/voodoo-doll.htm
Voodoo dolls: More than just a spooky legend. Explore the rich cultural significance and spiritual practices surrounding these intriguing objects.