The phase and the group velocity of light propagating in conventional optical media cannot exceed the speed of light in ...

UCLA, which was next to evacuation warning and mandatory evacuation zones, will reopen for in-person classes on Tuesday. UCLA had switched to remote instruction last week out of caution.

Anybody can develop high frequency hearing loss, but it becomes more common with age. Exposure to loud sounds or high frequency sounds are common causes of ear damage in younger people.

All this makes sense given the swelling of (perennially unequal) private wealth relative to national ... This new wealth divide now shapes elections far more than the old class schism. Whereas ...

Disputes stem from "unequal agreements" of a previous government. The efforts to install barbed wire fencing along the border were halted amid objections from the Border Guard Bangladesh.

The suspension of classes is for both private and public schools, the Office of the Executive Secretary said. Last December 4, the religious group announced that they would hold a rally where they ...