MIT Technology Review @techreview A media company making technology a greater force for good. Get our journalism: Aug. 20, 2019 1 min read

On #NationalRadioDay, we're also celebrating some of the technology behind radios because, without it, this would happen. 👇

The basic design of the radio antenna hasn’t changed in a century. But physicists would dearly love to make antennas more capable and more secure. Enter the atomic radio. 

Wi-Fi fills our world with radio waves. Now researchers can exploit ambient signals to track individuals in their own homes. 

Who gets to send radio waves in space? 

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