Arctic Sea Ice Hits Annual Low, but It’s Not as Low as Recent Years

Environmentalists hail China’s vow to stop building coal-fired power plants abroad

World's oldest identical twins are 107 years (and 300 days) old

Garrett Reisman, former NASA engineer that went to work at SpaceX, talks about the differences between the two. “[At SpaceX] we would make a decision in a single meeting that would take years to reach the same decision point at NASA,” he says.