Eratosthenes 276–195 B.C. This Greek astronomer was the first to measure the size of Earth accurately. He determined that the earth's polar diameter was about 7,850 miles. (In fact, the distance is…
Sources: NASA and the International Astronomical Union. News Flash (August 24, 2006)—Pluto Demoted! Read About It Here. Misleading reports that Pluto was about to lose its status as a planet in…
So How's the Europan Seafood? Even if life does exist on Europa, it is still too early to take up extraterrestrial ice fishing. Most likely, only very primitive forms of life would exist (microbes…
Liberty’s Kids (The Learning Company)As a reporter for the Philadelphia Gazette, you interview the major players in the American Revolution, gather facts and quotes and write your own front-page…
News Flash (August 24, 2006)—Pluto Demoted! Read About It Here. Pluto, named after the Roman and Greek god of the underworld, is the coldest, smallest, and outermost planet in our solar system.…
—Holly HartmanMystery Skull In July 2002, an international team led by French paleontologist Michel Brunet announced the discovery of a humanlike skull that may be up to seven million years old,…
Eclipse Lit by Ricco Villanueva Siasoco Eclipses have played an important part in literature from the early Chinese poets to Milton and Twain.The astrological phenomenon known as a solar…
WAVES AND PARTICLESLIGHTHOUSETRANSMISSION OF LIGHTLIGHT SOURCESSHADOWSFIND OUT MORELight makes the world seem bright and colourful to our eyes. Light is a type of electromagnetic radiation that…
A Century of Cinematic SplendorMovies and FilmFrench Film HistoryIt's Art, Stupid!A Century of Cinematic SplendorBefore the WarSurfing the "New Wave"The Eighties and NinetiesTen Fabulous French Films…
January: named after Janus, protector of the gateway to heaven February: named after Februalia, a time period when sacrifices were made to atone for sins March: named after Mars, the god of war…
