Clear-air turbulence could be detected to prevent injuries
Low-cost, rapid, point-of-care, diagnostic health tests could save millions of lives
Tents could be cooler / warmer
Rural water systems could be monitored with sensors
Black boxes / flight recorders on planes could improve
Processing equipment could be used to produce safe food in developing countries
Fracking could enhance geothermal energy
Engineering companies could have divisions to address global challenges