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‘Gyroscope’ molecules form crystal that’s both solid and full of motion

Molecular machines, much smaller than single cells, may one day be able to deliver drugs to kill cancer cells or patrol your body for signs of disease. But many applications of these machines require large arrays of rock-hard moving parts, which would be difficult to build with typical biological structures.

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Ultrafast Camera Captures 'Sonic Booms' of Light for First Time

Just as aircraft flying at supersonic speeds create cone-shaped sonic booms, pulses of light can leave behind cone-shaped wakes of light. Now, a superfast camera has captured the first-ever video of these events.