Europe's CryoSat satellite was used - over 7 years - to track 10,000 miles (16,000 km) of Antarctic coastline. It can be seen warm ocean water is eating away at Antarctica's floating margins.
The super-black feathers of Birds of Paradise absorb almost every last bit of light that strikes them. This black is so dark your eyes can't focus on its surface.
Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the 4 lowest maximum extents on record, say scientists
In 2015, a mega-expedition - 30 vessels simultaneously - crossed the Great Pacific Garbage Patch and collected 1.2 million plastic samples. They say the problem is getting worse.