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Nearly one-third of the world’s farms have adopted more environmentally friendly practices while continuing to be productive, according to a global assessment by 17 scientists in five countries.

In two major Arctic rivers, a changing climate and shifting human activities are provoking a surprising response.

When spraying paint or coatings onto a surface, or fertilizers or pesticides onto crops, the size of the droplets makes a big difference. Bigger drops will drift less in the wind, allowing them to strike their intended targets more accurately, but smaller droplets are more likely to stick when they land instead of bouncing off.

Levels of some persistent organic pollutants (POPs) regulated by the Stockholm Convention are decreasing in the Arctic.

Researchers at the University of Waterloo have reached an important milestone by logging their 100thkilometre on public roads in a self-driving car.