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What's the deepest cave in the world?Life's Little Mysteries There are two contenders for the world's deepest cave, and they're in the same mountain range.
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Why can't we figure out how strong gravity is?Life's Little Mysteries Despite dozens of experiments over the years, scientists still don't have a precise measurement for gravity's strength. Why is that?
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How many generations of humans have there been?Life's Little Mysteries Modern humans have been around 300,000 years. How many generations is that?
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What is jet lag, and how can you avoid it?Long-haul travelers often feel totally out of whack for several days after arriving at their destination. Jet lag is a natural phenomenon, but can it be prevented?
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How did animals survive the asteroid that killed the dinosaurs?Life's Little Mysteries It helped to have a number of features to aid survival following the end-Cretaceous mass extinction.
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How hot is Earth's core?Life's Little Mysteries What's the temperature in Earth's core, and how did we figure that out?
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Why aren't brain transplants possible?Life's Little Mysteries Lining up donor and recipient nerves for a potential brain transplant is one thing. Getting them to communicate is another.
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Can people catch infections from plants?Life's Little Mysteries Catching diseases from plants may not just be the domain of science fiction.
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Are we more closely related to cats or dogs?The answer of whether humans are more closely related to cats or dogs depends on how you look at the question.
