HOW TO LAUNCH A CAMERA INTO SPACE. “MIT students Justin Lee and Oliver Yeh stuffed a camera in a cooler, tied it to a helium balloon, and—with FAA approval—launched the rig 17.5 miles into the stratosphere. ‘The results were fantastic,’ Lee says. ‘We tracked the device with a GPS-enabled cellphone and found it 20 miles from the launch site.’ The 5-hour flight, which cost $150 in materials, took photos of Earth every 5 seconds.”