Coal-fired stoves in traditional homes are the primary source of extreme levels of air pollution in over-crowded Ulaanbaatar. As more people become climate-displaced, the situation is likely to worsen, write SCIENCE AND SOCIETY

Despite opposition from Greenland’s people and Denmark, Washington intends to control the Arctic territory one way or another. Strategic dominance, mineral wealth and military power are the driving forces at play, writes ROGER McKENZIE