Green spectrum light can actually damage plants.
Hummingbirds can distinguish blends of color that we see as ordinary hues.
Regular improvements in so-called optical clocks are setting the stage for a redefinition of the second and powering searches for new laws of physics.
Researchers have embedded gold particles in soft films that dissipate light energy at the surface of the eye and could have future medical uses.
New proof of concept could guard against the disorienting effects of laser pointers invading the cockpit.