The spongy fuel that's made from trees
28 June 2017
Under the electron microscope, charcoal looks almost like Swiss cheese – and how well it keeps that structure tells us about its potential to keep us warm
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Premium
Open the floodgates: Designer deluges could save dammed rivers
28 June 2017
Dams provide vital green power but destroy precious river ecosystems. Could unleashing artificial floods give us the best of both worlds?
Oil-exploration airguns punch 2-kilometre-wide holes in plankton
22 June 2017
The seismic airguns used to look for undersea oil don’t just disrupt marine mammals, their shock waves also kill and disperse the plankton population
