Aldo Leopold was an American author, philosopher, scientist, ecologist, and conservationist who is best known for his book "A Sand County Almanac".

The American Museum of Natural History is a renowned museum located in New York City.

Birds are a group of warm-blooded vertebrates characterized by feathers, beaks, wings, and the ability to lay eggs.

Carl Sagan (1934-1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, and science communicator.

Carl Woese (July 15, 1928 - December 30, 2012) was an American microbiologist and biophysicist.

Charles Darwin was an English naturalist and geologist, best known for his contributions to the theory of evolution.

The Wikipedia page on Earthworm provides comprehensive information about these annelid worms.

Etymology is the study of the origins and historical development of words.