When properly managed, savannas like the Serengeti are capable of capturing at least as much carbon as tropical rainforests.

Less than 25% of Illinois farmland is owned by the farmer who works the land, with the rest leased by individuals, family trusts and, increasingly, investors looking to turn a profit.

During the fall, trees change color and then lose their leaves. This is in preparation for the winter season. Because it gets so cold, the trees have adapted to the winter by going into a period of ...