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What's a Second Cousin vs. a First Cousin Once-Removed? There's a simple way to figure out the relationships between relations.
Are Big Brains Smarter? Humans boast the biggest brains, relative to body size, in the animal kingdom.
Why Do We See Stars When Sneezing? "Stars" while sneezing are caused by stimulation of the back of the eye.
Can Peanut Butter Go Bad? PB is gooey and delicious, yet it can remain at room temperature for months.
What is the Longest-Living Animal? The animal with the most birthdays goes to ...
Can Animals Tell Time? Rats are able to keep track of how much time has passed since they discovered a piece of cheese.
Why Do We Have Fingernails? We have fingernails because we're primates.
When Did April Fool's Day Begin? No one knows when or why the celebration of practical jokes and pranks began.
What is Hay Fever? Doctors and researchers who specialize in allergies prefer the term "allergic rhinitis"
Is Beef Jerky Safe? A little extra heat can help jerky producers keep out microbes.
Do Astronauts Take iPods to Space? Astronauts can take iPods to space among up to 20 small, personal items.
Are Humans Meant to be Monogamous? In the animal kingdom, loyal partners are rare.
What's the Deepest Canyon? Are you looking on Earth, or in the vast solar system?
Who Was the First Person to Fly? Orville and Wilbur might jump to mind. But the Wright Brothers were half a century late.
What is a Quasar? A single quasar could outshine an entire galaxy.
How Big is Jupiter? How Big is Jupiter?
Why Do We Need Leap Year? Why Do We Need Leap Year?
How Quickly Can Bacteria Multiply? Give bacteria a warm bed and food to eat and they will start to multiply immediately.
Is Love Good For You? While most things are best taken in moderation, love is something you might want to give and receive freely this Valentine's day.
What are X-rays? An X-ray photon can be hundreds or thousands of times more energetic than a photon of visible light.
What is Relativity? Einstein's theory revolutionized how we view time, space, gravity and spaceship headlights.
What Is the World’s Fastest Animal? If animals held their own Olympics, there’d be several gold medal winners for speed.
Why Does Outer Space Look Black? The color black usually signals the absence of light. But inside the solar system, space is filled with light.
How Does Scent Travel? To get to your nose, a rosy smell rides the wind. Unfortunately, stinky scents travel the same route.
Why Do We Die?
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