If you think that watching all the nature programs on television qualifies you as an expert on the subject, think again! Do you really know what makes animals t

Volume three of a four-volume set which explores the origins and development of the universe, Earth, and the theory of evolution.

Updated for 2013, Ecology is one title in the Britannica Illustrated Science Library Series. Long ago when people still lived in caves—perhaps at the same time

People Saving Their Trees in Hurricane Sandy will raise funds for charities to plant trees in stricken areas. Read inspiring, heartfelt, and heroic stories from