September 11, 2001 was one of the darkest days in modern American history. In a series of coordinated terrorist attacks, carried out by al-Qaeda, hijacked commercial planes were turned into deadly ...

In a new study published in Science, researchers analyzed the impacts of free-roaming bison in Yellowstone National Park.

In the first century B.C.E., Rome seemed unstoppable. By 30 B.C.E., the Romans had toppled Cleopatra, ended the 275-year-old Ptolemaic dynasty, and taken control of Egypt. Then they turned their ...

From Nephthys, the ancient Egyptian deity who protected mummies, to the Aztec "Lady of the Dead," who continues to play a role in modern festivals, discover history's most fascinating goddesses of ...