Hong Kong light pollution 'one of world's worst'

Hong Kong is one of the world's worst cities for light pollution with night skies around 1,000 times brighter than globally accepted levels, researchers said Wednesday ahead of this year's Earth Hour event.

What does the Arctic tell us about climate change?

As climate change melts the polar ice cap, the Arctic becomes more accessible, causing increased marine traffic and greater industrial development. University of Calgary researchers are investigating the environmental pressures ...

How a rare plant species could hinder a needed lithium mine

Skyrocketing demand for domestically sourced lithium to meet federal goals for zero-emission technologies has developers planning for the next great mining boon in the Silver State, but a rare wildflower may stymie one proposed ...

Study finds dangerous mercury levels in Amazon fish

Nearly one-third of the fish in the Brazilian Amazon state of Amapa have such high levels of mercury caused by illegal mining that they are dangerous for human consumption, according to a new study.

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