Why does light carry energy even though it has no mass? This video explains the real physics behind photons, energy–momentum ...

The Reddit poster — a homeless man — claimed that he saw the suspected shooter walking in the area of the Brown University ...

The suspect was a former Brown PhD student, and officials believe he went to school in Lisbon with the slain MIT professor.

Quantum physics is quietly rewriting the rulebook for how far and how fast humanity might travel beyond Earth. A cluster of ...

Claudio Manuel Neves Valente, 48, was found dead from a self-inflicted gunshot wound inside a New Hampshire storage unit on ...

During a news conference Thursday, authorities identified the suspect as Claudio Manuel Neves Valente and said he took his ...

Claudio Neves Valente, 48, a Brown student and Portuguese national, was found dead Thursday evening from a self-inflicted ...

As investigators work to find a motive behind the mass shooting at Brown University and the slaying of an acclaimed MIT professor, former classmates of the accused killer described him as a brilliant ...

The Brown University shooting suspect was found dead in a storage unit in Salem, New Hampshire. Authorities believe he is ...

Warm dense matter is a state of matter that forms at extreme temperatures and pressures, like those found at the center of ...

A user on the social media site, who had an altercation with the suspect before the shooting, “blew this case wide open,” ...

Claudio Neves Valente, the suspect in the Brown University mass shooting, was found dead tonight after taking his own life, Providence Chief of Police Oscar L. Perez, Jr. said. Follow for live news ...