Scientists at the California Institute of Technology have taken a major step toward developing lightsails that could one day ...

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

Amid mounting challenges to Colorado’s water supply, lawmakers are seeking to upgrade the decades-old method of tracking the ...

Coltrane, a jazz virtuoso who devoted much of her life to a spiritual journey, is a beacon for today’s artists. An exhibition ...