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The Hiroshima and Nagasaki Bombings Remembered

The Bombings of Hiroshima and Nagasaki August 6 and 9, 1945 by Ben Snowden At 2:45 in the morning of August 6, 1945, an American B-29 bomber flew north from Tinian Island in the Marianas…

Algebra: Speed and Distance Problems

Speed and Distance Problems Algebra Whipping Word Problems Interest Problems Area and Volume Problems Speed and Distance Problems Mixture and Combination Problems Have you ever heard of a…

A Dangerous Edge

Other less commonly used chemicals have caught the media's eye recently. St. Louis Cardinals' slugger Mark McGwire has admitted to taking a testosterone-producing pill called Androstenedione (…

Being Transgender Today

After years of struggling for visibility and acceptance, transgender individuals and the issues they face came into the national spotlight in 2015.   Caitlyn Jenner Photo Credit: Annie…

Origin of Prokaryotes and Eukaryotes: Protists

ProtistsOrigin of Prokaryotes and EukaryotesIntroductionOrigin of ProkaryotesEukaryote EvolutionProtistsSlime Molds Protists represent in excess of 100,000 species and are so varied in their…

gaur, in zoology

(Encyclopedia) gaur, large wild ox of Southeast Asia, having a humplike ridge on the back. The gaur, Bos gaurus, is thought to be the largest of the wild cattle; the bulls may measure more than 6 ft…

lock, canal

(Encyclopedia) lock, canal, stretch of water enclosed by gates, one at each end, built into a canal or river for the purpose of raising or lowering a vessel from one water level to another. A lock…

DK Science: Dating Fossils

Dating a dinosaur skeletonRock layers of a cliff faceIndex fossilsRadiometric datingThe Age of Dinosaurs was so many millions of years ago that it is very difficult to date exactly. Scientists use…