As winter approaches, some species of bats settle in to hibernate in caves. Lack of food and dropping temperatures drive them inside, where “carpets” of bats congregate on cave ceilings.
Forests constitute an important part of the “Carbon World Bank.” The organic matter in their leaves, wood, roots and soil stores a great deal of carbon absorbed from the atmosphere.
The muddy San Juan River was once home to giant specimens of America’s largest minnow—a fish that could grow as long as a man is tall, and to a weight of a hundred pounds.
