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

One of the major criticisms of China’s breakneck development in recent decades has been the impact on nature — returning after 15 years away, BEN CHACKO assessed whether the government’s recent turn to environmentalism has yielded results

ALASTAIR BONNETT reports on the paradoxes of populist attitudes towards protection of the natural world