In less than a millionth of a second after a nuclear detonation or a severe nuclear reactor accident, an enormous burst of ...

Although vapor-compression refrigeration is a simple concept, there are still a lot of details in the implementation of such a system that determines exactly how efficient it is. After making a few of ...

YouTube is expanding its direct messaging (DM) experiment to more regions. The feature is now available in 31 countries in Europe. It was initially available only in Poland and Ireland. The feature ...

The race to advance conversational AI in the living room is heating up, with YouTube being the latest to expand its tool to smart TVs, gaming consoles, and streaming devices. This experimental feature ...

Arteries carry oxygenated blood away from your heart. They have thick walls and a muscular layer that keeps your blood moving. Arteries can be as wide as a nickel (about two centimeters). They are the ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

Before electric trains, London experimented with something far stranger. Victorians built a pneumatic railway that moved people using air pressure inside underground tunnels. The system worked, ...

Older table-top AC-DC radios used a classic line-up of tubes. Think 12SA7, 12SK7,12SQ7, 35Z5GT, and 50L6GT. As I grew into my teens, I got interested in how these radios worked and soon discovered ...

A thought experiment that was at the heart of an argument between famed physicists Albert Einstein and Niels Bohr in 1927 has finally been made real. Its findings elucidate one of the core mysteries ...

For 34 years, Dutch inventor Theo Jansen has been evolving his Strandbeests — wind-powered walking skeletons designed to survive on the beach like living creatures. Each generation overcame challenges ...