If salts are constantly washing into rivers, lakes and oceans, why aren't inland lakes salty as well?
I have a friend who says there's not much oxygen on earth. Ever since I heard that I can't catch my breath! What's the truth?
Where is the last place you would expect to find a seashell? Probably on the top of a mountain right?
These unique sharks have heads resembling flattened, T shaped hammers. But how would such a weird head evolve?
Learn how whales became sailors on this Moment of Science.
Barnacle geese leave Europe in spring and fly north to breed on rocky Arctic islands.
How does such a tiny organism do so much to help reduce global warming?
Many shark species in the northwestern Atlantic have declined by more than half in just the last 8-15 years. Learn more on this Moment of Science.
How fast anything spins is partly determined by how its weight is distributed. The closer an object’s weight is to its axis of rotation, the faster it spins. To picture this, imagine an ice skater doing a pirouette. When her arms are extended, she spins slowly.