How do you gather information about a bird species that spends 99 percent or more of its time at sea? Until recently, there wasn’t an easy answer.
After 10 years of flying through space, the Rosetta spacecraft arrives at its target [Infographic]
The satellite is set to map sources and sinks of greenhouse gas in unprecedented detail. A 2008 version of the probe failed to reach orbit
NASA will make another attempt to get the Orbiting Carbon Observatory into space to answer questions about global warming