File name: globalhawk_1000.jpg Original Resolution: 1000 × 216 File Size: 188 KB (MIME Type: image/jpeg) Date Published: March 25, 2016 Download file View image caption The unmanned drone the Global Hawk, which has the ability to travel for 24 hours at a time without refueling. Photo credit: Gijs de Boer (CU/NOAA).
