A US man accused of sending a poison-laced letter to the White House was released from jail with his charges dismissed Tuesday as officials searched the home of a rival.
US safety officials investigating burned batteries on two Boeing 787s said Tuesday they are not certain what caused the incidents, even as aviation regulators approve Boeing's fix for the problem.
Hackers spooked markets Tuesday after breaking into the Associated Press's Twitter account and falsely reporting President Barack Obama had been injured after two blasts at the White House.
US lawmakers learned Tuesday that security monitors "pinged" when a Boston bombing suspect flew to Russia last year, as concerns grew about possible intelligence sharing failures.
Apple reported Tuesday that its quarterly profit dipped for the first time in nearly a decade as it squeezed less money from its champions in the competitive smartphone and tablet markets.
The United States would consider any new request from North Korea to resume food aid stalled since 2009, provided Pyongyang allowed US staff inside the isolated country to monitor distribution.
Venezuela stepped up attacks on the United States Monday, threatening retaliatory measures affecting trade and energy if Washington resorts to sanctions in a row over the country's disputed presidential election.
The White House warned Monday that the deadly Boston Marathon attacks should not derail momentum towards immigration reform, as US lawmakers clashed over linking the two issues.
Hollywood star Russell Crowe led tributes Tuesday to Australia's "Queen of Rock" Chrissy Amphlett who died in New York after a long battle with cancer.
The US International Trade Commission on Monday tossed out a Motorola Mobility patent claim that threatened to block the import of some Apple iPhone models into this country.
Health experts warned Monday about serious risks from the "Cinnamon Challenge," a game popular with US teens, who ingest a spoonful of the pungent spice, then try to refrain from drinking water.
Boston bombing suspect Dzhokhar Tsarnaev has told investigators his brother was the leader in last week's deadly attacks, and that no international terrorist groups were behind them.
More than half of the 166 detainees held at the US-run Guantanamo military prison have joined a rapidly growing hunger strike to protest their indefinite detention.
The wait for North Korea's expected missile test, which has kept South Korean and US forces on heightened alert for the past two weeks, may stretch to July.
US manufacturer Orbital Sciences launched its first Antares rocket Sunday, paving the way for a demonstration flight to the International Space Station within months.
Oscar winner Reese Witherspoon was arrested for disorderly conduct in the US state of Georgia after authorities detained her husband for drunk driving.
US authorities have asked Interpol to provide any information its members around the world might have on bombs similar to the ones used in the Boston Marathon attack.