News tagged with time

Former US climate chiefs urge political unity

Four former heads of the US Environmental Protection Agency who served under Republican presidents urged lawmakers Wednesday to stop bickering over whether climate change is real and start finding solutions.

Jun 18, 2014
3.7 / 5 (19) 86

From close air support to fire suppression

In the heat of battle, lives can depend on being able to coordinate troop positions safely while directing aircraft to provide close air support for ground forces. DARPA's Persistent Close Air Support (PCAS) ...

Jun 10, 2014
5 / 5 (1) 0