DNA shines a light back into the past, showing us things that fossils can't. But how far back can that light extend? Some of the oldest DNA sequences come from mastodon and polar bear fossils about 50 ...
The Antarctic blue whale (Balaenoptera musculus ssp. Intermedia) is the largest animal on the planet, but it is critically ...
America’s national parks get all the glory, and for good reason. They’re spectacular, iconic, and frankly deserve every bit ...