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.
Rescuers worked in cold rain on Thursday to find survivors amid the rubble of houses destroyed in a fiery explosion at a Texas fertilizer plant.
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Marathon blasts hurt US image as safe place to study
20 years since Waco 'massacre'
The situation remains volatile at a Texas fertilizer facility that exploded late on Wednesday.
The campus of the California State University Los Angeles (CSULA) is being evacuated Thursday due to a bomb threat.
The FBI special agent Richard DesLauriers on Thursday released the photos of two suspects for Monday's deadly bombings in Boston.
A suspect was charged on Thursday for using mail to threaten President Barack Obama and two others.
The El Sereno campus of California State University Los Angeles (CSULA) is being evacuated Thursday due to an emergency. There are rumors spread about bomb threat.
Two new planetary systems that include three most Earth-like planets in the so-called "habitable zone" have been identified.
The Obama administration is open to "authentic and credible" negotiations with the Democratic People's Republic of Korea (DPRK).
US President Barack Obama vowed here on Thursday to find those behind Monday's Boston Marathon bombings and bring them to justice.
The death of the Chinese student in the Boston bombings presents a potential image nightmare for US higher education, which is determined to counter perceptions that the United States is unsafe.
An explosion at a fertilizer plant leveled dozens of homes in a small Texas town on Wednesday, killing as many as 15 people, injuring over 160 others.
20 years since Waco 'massacre'
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Boston marathon bombings
Twenty years ago on April 19, the 50-day "Waco siege", ended violently with a fire that engulfed Mount Carmel Center, outside of Waco, Texas. Seventy-six people lost their lives.