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Engineers at wastewater recycling plants can rest easy knowing that their methods for minimizing the formation of a potent carcinogen are targeting the right chemical compound.

Researchers at Chalmers University of Technology have shown that between 87 and 98 percent of ships comply with the tougher regulations for sulphur emissions that were introduced in northern Europe in 2015. The lowest levels of compliance were observed in the western part of the English Channel and in the middle of the Baltic Sea.

It seems like getting something for nothing, but you really can get drinkable water right out of the driest of desert air.

Researchers have conducted the first field tests for a new laser-based system that can pinpoint the location of very small methane leaks over an area of several square miles. The new technology could one day be used to continuously monitor for costly and dangerous methane leaks at oil and gas production sites.

Driving from Medan, Indonesia’s third-largest city, to Lake Toba, the world’s largest volcanic lake in the central highlands of Sumatra, the extent of the country’s deforestation becomes numbingly clear. For hours, a visitor passes plantation after plantation — here palm oil, there paper pulp — all the way to a small, protected forest ring around the lake.