Climate scientists worldwide have observed a longer-term global warming trend that can only be explained by the increase in greenhouse gases in the atmosphere.

In a city that's just earned the title of the most dangerous in the Americas, few people dare go to the police with complaints. Rather, they view police officers with fear, scorn and disgust.

Despite the economic downturn, the rate of homelessness across the United States decreased 1 percent from 2009 to 2011, according to a report that the National Alliance to End Homelessness released earlier this week.

Teen pregnancy rates in the United States have fallen in recent years, but the country still has a higher rate than any other developed country, according to data released Thursday from the Centers for Disease Control and Prevention.

Wikipedia takes site offline to protest SOPA

WASHINGTON - Unveiling a historic rule, the Environmental Protection Agency on Wednesday announced the first national requirement for the nation's coal-fired power plants to reduce emissions of mercury, arsenic, cyanide and other toxic pollutants.

MANILA, Philippines - Rescuers on Sunday struggled to search for hundreds of missing in floods that devastated two southern Philippine cities and nearby areas, killing more than 400 people and sweeping entire villages into the sea.

K CROSSING, Kuwait - A U.S. military convoy sliced through the flat Iraqi desert before first light, carrying the last troops safely into Kuwait and ending America's costly and divisive war in a troubled land.

CHICAGO - Rod Blagojevich, Illinois' 40th governor, was sentenced to 14 years in prison Wednesday for the attempted sale of a U.S. Senate seat, illegal shakedowns for campaign cash and lying to federal agents.

CAIRO - Egypt plunged deeper into political crisis just eight days before elections, as security forces attacked protesters and torched their tents Sunday in unrest that appears headed toward a second uprising, this time against Egypt's military rulers.