How to kill everything; Stressed-out fish; Geoengineering; and more

Air Date: Jul 29, 2017 12:00 AM ET

Fighting mosquito-borne diseases with more mosquitoes; Who should be in charge of geoengineering?; Stressed fish less likely to get caught; How to wipe out all life on Earth; Your t-shirt could charge your phone; A blood test for concussions