In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an exceedingly rare discovery: a mysterious object passing through the solar ...

A Delaware State Police trooper was killed in the active shooter incident at the Wilmington Division of Motor Vehicles near New Castle that prompted the abrupt closure of the center mid-afternoon on ...

Police are probably going to sift through a lot more Reddit posts in the future. One of those online posts played a big role in helping investigators find the suspect who killed two students at Brown ...

Growing up in Portugal, Claudio Manuel Neves Valente stood out for his intellectual potential. In high school, he traveled to national and international physics competitions. He later graduated from ...

Luke Air Force Base was placed on lockdown Friday due to reports of an active shooter incident. An all-clear was given at the base at 11:21 a.m. on Dec. 19 after officials said no active threat was ...

PHOENIX – Authorities found no evidence of an active shooter at Luke Air Force Base on Friday after locking down and searching the West Valley military installment. The lockdown was lifted just after ...

The suspected shooter who murdered two Brown University students on Saturday and an MIT physics professor on Monday has been found dead in a New Hampshire storage facility. “Tonight our Providence ...

Add Yahoo as a preferred source to see more of our stories on Google. The lack of usable surveillance video is significantly hampering the search for the Brown University shooter, a source briefed on ...

The lack of usable surveillance video is significantly hampering the search for the Brown University shooter, a source briefed on the investigation told CBS News on Wednesday. Investigators have ...

Authorities are renewing their push for more information from the public to help figure out who killed two students and injured nine others at Brown University on Saturday. On Wednesday, Providence, ...

As the hunt for the Brown University shooter enters its fifth day, students and others are increasingly vexed and frightened that the killer remains at large and the motive is obscure. “How can they ...