It’s a regrettably common scene: hostages at gunpoint, police shouting through bullhorns, holding off for fear of harming those inside. Now Huntsville, AL-based Time Domain has a device that could give the cops a better sense of when to move in: an instrument that can see through walls. Much like a radar set, the system sends out a signal that bounces off objects, so distances can be calculated. But while radar sends out a continuous wave, Time Domain’s instrument sends out millions of pulses per second, allowing it to screen out still objects and precisely locate moving objects. The device, which the company expects to sell by year’s end, will be responsive enough to detect even the minute motions of a person attempting to stand still. An even more sensitive version is being developed for use in finding people during earthquake rescue.
We won’t know how bad omicron is for another month
Gene sequencing gave an early alert about the latest covid variant. But we'll only know if omicron is a problem by watching it spread.
The US crackdown on Chinese economic espionage is a mess. We have the data to show it.
The US government’s China Initiative sought to protect national security. In the most comprehensive analysis of cases to date, MIT Technology Review reveals how far it has strayed from its goals.
Why blanket travel bans won’t work to stop omicron
The aim was to stop the variant's spread, but these bans look like too little, too late.
Eight ways scientists are unwrapping the mysteries of the human brain
Optogenetics and advanced imaging have helped neuroscientists understand how memories form and made it possible to manipulate them.
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.