US news

A new American study has confirmed southeastern British Columbia coal mines are contaminating waters shared by Canada and the U.S., adding the miner's attempts to remove selenium from wastewater aren't making much difference to the amount flowing south.

Only five per cent of the redwood forests that once stretched across coastal northern California have never been logged. An initiative to restore these forests is gaining momentum, aided by research showing that redwoods store more aboveground carbon than any forest on Earth.

With deadly extreme weather hitting all over the globe, rising temperatures peaking during the hottest summer on record and carbon pollution levels that keep climbing, Britain’s Prince William and wealthy entrepreneurs Bill Gates and Michael Bloomberg promised a warming world a degree of hope.