Aviation.com newsarama.com
New? Register Now! »Already a member? Log In »
Why Do People Sleepwalk? Lack of sleep, genetics, childhood and apnea are some of the causes of sleepwalking.
Does Recycling Plastic Cost More Than Making It? economic success or failure of plastics recycling relies various costs.
Why are Broken Bones Lethal to Horses? Second-place Derby winner was euthanized after bone injuries.
Is Yogurt Really Good for You? The yogurt section in the grocery store has gotten pretty complicated.
How Do Birds Navigate? About 50 animal species use Earth's magnetic field for navigation.
How Do Hallucinogens Work? Scientists are bringing lucidity to how hallucinogens work.
Is a Dog's Mouth Cleaner Than a Human's? Can a dog's mouth really be cleaner than a human's, despite all the leftover macaroni they chew?
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.
Page 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14  Next >>