News
- Physics
Rare ‘dark lightning’ might briefly touch passengers when flying
Gamma-ray blasts from thunderstorms might occasionally zap passing airplanes, briefly exposing passengers to unsafe levels of radiation.
- Archaeology
Complex supply chains may have appeared more than 3,000 years ago
Finds from one of the world’s oldest shipwrecks hint that miners in Central Asia and Turkey provided a crucial metal to Mediterranean rulers.
- Physics
Here’s how to make a fiber-optic cable out of air using a laser
A hollowed-out laser beam heats a tube of air that surrounds cooler air, providing a way to guide light much the way fiber optics do.
