Scientists have mapped how a group of fearsome, massive dinosaurs evolved and shrank to the likes of robins and hummingbirds.
A demoted worker shot and critically wounded his company's CEO before fatally shooting himself Thursday inside a downtown high-rise office building in Chicago's bustling financial district, police said.
As fighting continued to rage in eastern Ukraine, an international team of investigators on Thursday managed to reach the crash site of the Malaysia Airline Flight 17 for the first time since it was brought down by a missile two weeks ago.
Prime Minister Benjamin Netanyahu said Thursday that Israel will destroy the Hamas tunnel network in the Gaza Strip "with or without a cease-fire," as the military called up another 16,000 reservists to pursue its campaign in the densely-populated territory.
The deadliest recorded Ebola outbreak surpassed 700 deaths across West Africa on Thursday as the World Health Organization announced dozens of new deaths reported in the last several days.
A video camera captured the terrifying plight of two women who became trapped on an 80-foot-high railroad bridge in Indiana when a freight train surprised them as they walked along the tracks.
A soccer referee who was fatally punched by a player during a recreational game in suburban Detroit did not expect the attack, one of the player's teammates testified Wednesday.
A sharply divided House approved a Republican plan Wednesday to launch a campaign-season lawsuit against President Barack Obama, accusing him of exceeding the bounds of his constitutional authority. Obama and other Democrats derided the effort as a stunt aimed at tossing political red meat to conservative voters.
Police are investigating a possible sexual assault at a weekend Keith Urban concert at which dozens of people were treated for excessive drinking.
A former Utah airline pilot was sentenced Wednesday to more than two years in prison for groping a 14-year-old girl in the seat next to him during an off-duty flight.
Researchers say a ship unearthed at the site of New York's World Trade Center predates American independence.
Management failures by the Obama administration set the stage for the computer woes that paralyzed the president's new health care program last fall, nonpartisan investigators said in testimony released Wednesday.
Israeli strikes hit a crowded shopping area in Gaza City, hours after tank shells tore through the walls of a U.N. school crowded with war refugees Wednesday in the deadliest of a series of air and artillery attacks that push the Palestinian death toll above 1,300.
A Florida woman is charged with child neglect after police say she let her 7-year-old son walk to a park alone.
International observers turned back Wednesday after making another attempt to reach the site where Malaysia Airlines Flight 17 went down in eastern Ukraine, and a government official said the area near the zone had been mined by pro-Russian separatists who control it.