More than 3 million Americans fought in it, and over 600,000 men—2 percent of the population—died in it. Follow this timeline to chart the key historical figures and events. Learn how the ...

Library of Congress. January 1: President Abraham Lincoln signs the Emancipation Proclamation, declaring that the majority of the nation's slave population "henceforth shall be free." July ...

Evolution is defined as the change in the inherited traits of a population of organisms through successive generations. When living organisms reproduce, they pass on to their progeny a collection ...

The jail population has risen 32% since January 2022 ... the plan for Rikers was flawed and did not offer a realistic timeline,” he said. Adams said the city has already been investing hundreds ...