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W. Ludwig Kuhn

Ultrasound can save fish in hydropower rivers

Shooting sound waves through water can remove dissolved gas that results from hydropower production in rivers. This gas can harm fish. Researchers are now ready to test techniques to reduce the risk in real hydropower plants.

second hand clothes

Second-hand clothing is good, but less is best

Norway will reap major environmental benefits if residents stop sending wearable clothes out of the country, according to a recent study on clothing consumption in Norwegian households.

Seabed mining

Norway will be the first in the world to approve seabed mining. Is it a good idea?

The transition to a greener, renewable economy will require large amounts of minerals, and society has to get them from somewhere. Norwegian politicians have reached an agreement approving deep sea mining, in a proposal that has reaped both cheers and frustration from scientists and activists alike. Here’s what our scientists think.