Tsunamis may have washed away the geological evidence of ancient Martian oceans.
We use the phrase "saturated fat" a lot, but what does it really mean?
It only takes five generations of learners for a pantomime to become a stable sign.
You may have seen a cat fall from a tree or high rooftop. Ever wonder how felines can survive such great falls?
If you look at a bright lamp and then close your eyes, why can you still see the light?
Is your houseplant moving or is that just an optical illusion?
Why do some species of birds-of-paradise have such eye-catching plumage?
Moths are much less attracted to artificial light than they used to be.
What does the crystal ball reveal for human evolutionary future? Is it six-fingered hands for everyone?
Every planet with a magnetic field can produce polar lights. So why can't we see Jupiter's?