Noaa

Inside the oceans, autonomous floats take the temperature and pulse of our changing saltwater world. Two Hopkins alums helped send this fleet on its way. / Johns Hopkins Magazine

Search and Rescue GPS beacons aboard ships or in hikers' backpacks are the last line of defense against disaster, leading to more than 50,000 rescues to date. A new project by the Johns Hopkins Applied Physics Laboratory aims to make the technology even more accurate and efficient. / Johns Hopkins Magazine