HumansHarsh: Europe's cannabis died just as the first farmers arrived Cannabis – the source of the drug marijuana – virtually disappeared from Europe just as farmers arrived, so they didn’t get the chance to grow it for another 4500 years News
EarthA mix-up means US air pollution is way worse than thought Levels of nitrogen oxides in the air are still falling across the US, but satellite measurements show the reduction has slowed down unexpectedly since 2011 News