One of the fastest cameras in the world can now take better pictures than ever, even capturing neurons as they fire, according to a new study. This upgrade could help researchers learn more about how the brain works and how to improve combustion-engine fuel efficiency, the scientists said. The researchers previously developed a "streak camera" that could image at speeds of 100 billion frames per second in a single exposure — quick enough to capture pulses of light zipping through space. This device was the fastest receive-only camera in the world, meaning it needed only available light for imaging, as opposed to additional illumination from a source such as a laser. The scientists have now improved on this technique, called compressed ultrafast photography, boosting its resolution by about 2.4 times. http://www.livescience.com/55296-high-speed-camera-captures-neurons-firing.html