Many plants roots grow deep down into the soil, but how does the plant know which way is down?
Did you know it seems we're discovering a new exoplanet every week?
Your body uses three senses to keep you balanced--to tell you what's up and down.
New calculations suggest the rending of neutron star crusts may afford astrophysicists a glimpse at the insides of these bizarre celestial bodies.
Why is the earth round? Why isn't it a cube or a pyramid?
Here's an odd thing about weightlessness: if it were possible to live in the center of the earth we would be weightless there, too!
In the contest of pet superiority - dogs versus cats - who knew that drinking method was even a topic?
Try balancing a baseball bat on your hand. With some experimenting, you'll find that the bat stays up longer if you put the heavy end up. Why?
How tiny stones inside our heads tell us which way is up...