Newsletter Scientists see stronger evidence of slowing Atlantic Ocean circulation, an ‘Achilles’ heel’ of the climate The Atlantic meridional overturning circulation, a system of currents, has long been considered capable of a sudden shutdown, which could have dramatic climate effects.
Impacts www.usatoday.com Greenland ice melt: sled dogs 'walking on water' as sea ice melts This stunning photo – taken by scientists on the melting Greenland ice sheet last week – shows how unusually warm it's been in the Arctic.
Newsletter www.bbc.com The poisons released by melting Arctic ice Toxic chemicals, anthrax - even nuclear waste - could be unleashed by global warming.
Impacts www.washingtonpost.com The biggest Arctic expedition ever will spend a year in sea ice studying climate change Hundreds of researchers will spend a year in the fastest-warming place on the planet to understand the consequences of climate change.
