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Charles Darwin, carbon print photograph by Julia Margaret Cameron, 1868.

What Darwin Got Right (and Wrong) About Evolution

The Castillo, a Toltec-style pyramid, rises 79 feet (24 meters) above the plaza at Chichen Itza in Yucatan state, Mexico. The pyramid was built after invaders conquered the ancient Maya city in the tenth century.

What’s Inside the Pyramid at Chichén Itzá?

World Data Locator Map: Australia

Is Australia an Island?

number zero, 0 balloon

Is Zero an Even or an Odd Number?

Gills of three old specimens of webcap fungus (Cortinarius) in Gloucestershire, South West England. toxic, fungi, poisonous mushroom

7 of the World’s Most Poisonous Mushrooms

Julius Caesar in full Gaius Julius Caesar (100? BCE-44 BCE) statue in Rimini, Italy. Roman general and statesman and dictator

The Time Julius Caesar Was Captured by Pirates

Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd

Causes of the Great Depression

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naval architecture

In naval architecture: Stopping and reversing
Stopping in an emergency, as contrasted with normal coasting and gradual retardation, is achieved by slowing the propulsion device to less than driving speed and then by reversing its direction of thrust. If reversed too rapidly, it is liable to overload the engine, to draw…
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