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The use of motion data is expanding from fitness and rehabilitation to general health. Todor Tsvetkov/E+ via Getty Images

Turning motion into medicine: How AI, motion capture and wearables can improve your health

Motion data is well known for improving athletic performance and rehab. Thanks to AI, it’s also turning motion into another vital sign for general health.
A child may temporarily have baby teeth, adult teeth and gaps all at once. BSIP/Universal Images Group via Getty Images

Why do people have baby teeth and adult teeth?

A pediatric dentist and an anthropologist explain how baby teeth and adult teeth help humans chomp their food over a long lifespan.
The planetary radar, built in 1960 in Crimea, from which the Morse signal ‘MIR, Lenin, USSR’ was sent in November 1962. National Radio Astronomy Observatory Archive

SETI’s ‘Noah’s Ark’ – a space historian explores how the advent of radio astronomy led to the USSR’s search for extraterrestrial life

Radio astronomy opened up the universe for scientists. They could map new elements across galaxies and also search for signals from extraterrestrial civilizations.
An Akkadian cylinder seal, circa 2350-2150 B.C.E., depicts a contest scene. The image on the right shows the impression the seal would make. Gift of Nanette B. Kelekian, in memory of Charles Dikran and Beatrice Kelekian, 1999/Metropolitan Museum of Art

Signatures meant more in Mesopotamia than they do now − what cylinder seals say about ancient and modern life

Cylinder seals were intimately tied to their owner, showcasing their identity, beliefs and social status.
Amazon Web Services, hosted in data centers like this one in Virginia, supports thousands of websites, apps and online services – but not during its recent DNS outage. Nathan Howard/Getty Images

What is DNS? A computer engineer explains this foundational piece of the web – and why it’s the internet’s Achilles’ heel

The Domain Name System, like most pieces of the internet, was designed to be distributed across many computers. Concentration on few cloud providers is changing that.
Many companies and space agencies want to send satellites to orbit the Moon, and crowding could become a concern. European Space Agency ©ESA

With more Moon missions on the horizon, avoiding crowding and collisions will be a growing challenge

The US doesn’t currently have much ability to monitor what’s going on in the space around the Moon. An effort by the Air Force Research Laboratory could help.
Woven fabric is resilient to stress because it tends to bend more than rigid materials before breaking. Jordan Lye/Moment via Getty Images

Woven baskets aren’t just aesthetically pleasing – materials science research finds they’re sturdier and more resilient than stiff containers

3D woven baskets are geometrically sophisticated, with some incredible properties that engineers can use to design materials and technology.