It may be hard to believe, but Antarctica used to be home to forests.
According to geologists, there's something very hot going on under all that ice.
Learn about the iceberg that sank the Titanic, on this Moment of Science.
By synchronizing movements and huddling with one another, Emperor penguins can stay warm in the coldest place on Earth.
What is the biggest living animal? An elephant? Not even close. Learn more on this Moment of Science.
Native Americans called it Pogonip, or white death. Find out more about this strange type of fog.