Massive Avalanche above Stevens Pass. Dropping bombs from helicopter.
Biologist Timothy Mousseau has been studying the lasting effects of radiation on the flora and fauna of Chernobyl, Ukraine.
A sponge might not look like much, but these simple animals with no brain or ability to move have lived on Earth for hundreds of millions of years. They can hunt prey and spawn, and Jonathan demonstrates how in this fascinating segment about the biology of sponges.
Most people don't realize that the American southern accent is not a sign of ignorance but actually the fact that according to linguists.
