In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat previously thought impossible, as light typically passes through other light ...

Tubular laser beams can create what amount to fiber-optic cables made of thin air, researchers report in a study to appear in Physical Review X. Laser-heated air can efficiently transmit light signals ...

Much of this story is going to sound like hokum, but bear with me because doughnut-shaped laser beams have become my new favourite scientific innovation. Especially since scientists were able to ...