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Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.

6 Lakes That Are Drying Up

Statue of Nostradamus

Nostradamus and His Prophecies

An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

11 Egyptian Gods and Goddesses

Middle East bee locator map

Are the Middle East and the Near East the Same Thing?

Salem Witch Trials. Photogravure after the painting by Walter McEwen titled - The Witches - circa 1890s.

How Rye Bread May Have Caused the Salem Witch Trials

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

Estimated battle casualties, Normandy invasion, World War II. WWII, D-Day

Estimated Battle Casualties During the Normandy Invasion and Campaign to Liberate Paris (June–August 1944)

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Topics

Creutzfeldt-Jakob disease bovine spongiform encephalopathy Gerstmann-Sträussler-Scheinker disease chronic wasting disease fatal familial insomnia spongiform encephalopathy obligate parasite scrapie kuru protein fungus bacteria virus parasitism viroid enzyme transcription factor interferon cytokine interleukin

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Key People

Susan L. Lindquist

American molecular biologist

Stanley B. Prusiner, 2004.

Stanley B. Prusiner

American biochemist and neurologist