UC Santa Barbara students attend a candlelight vigil following Friday's series of drive-by shootings that left 7 people dead in the Isla Vista section of Santa Barbara May 24, 2014.
An explosion tore through a fertilizer plant and leveled dozens of homes in a small Texas town late on Wednesday, killing up to 15 people, injuring more than 160 and spewing toxic fumes that forced the evacuation of half the community.Live report, Boston marathon bombings
Manual vote counting is not possible in Venezuela, the president of the Supreme Court said Wednesday amid opposition's request for an audit.
A fire is still burning at a Texas fertilizer plant, six hours after an explosion Wednesday night is feared to have killed dozens and injured 170 more.
Live Report: Texas & Boston blasts
The Venezuelan government supports Palestine's bid to become a full member of the United Nations.
Elderly women wearing tiaras sit in the audience during a beauty pageant for elderly women called the "Queen of the Elderly" in Guadalajara, Mexico, April 17, 2013.
Hundreds of people were likely injured in a fiery explosion on Wednesday night at a fertilizer plant near Waco, Texas. Live Report: Boston & Texas blasts
Venezuela's President-elect Nicolas Maduro said Wednesday that he does not care if the United States recognizes his narrow victory in Sunday's elections.
The US Senate rejected a bipartisan plan to expand background checks for gun buyers, dealing a crippling blow to Obama's campaign to curb gun violence.
Investigators have spotted a Boston Marathon bombing suspect from security video taken before two blasts ripped through central Boston on Monday.
Live Report: Boston & Texas blasts
Xi expresses concern for Chinese victims in blasts
The FBI confirmed a letter addressed to Obama has been preliminarily tested positive for ricin but the authorities have not found a link to Boston bombings.
Orbital Sciences Corp. is set for the first test flight of its Antares rocket on Wednesday.