Search our collection of background (non-event) articles from news media, science journals and other sources.
As the deepest and most northern of the Great Lakes, Superior was once thought immune to algal blooms, which is why it was such a shock when the first report of blue-green algae came in 2012.
Several people have drowned or been reported missing after swimming in Pacific Northwest bodies of water during the record-breaking heat wave in the past few days.
The small Swedish town of Fagersta, Västmanland County, has been at the epicentre of the recent outbreak of African swine fever.All activities in an area of forest around 1000 square kilometers in the counties of Västmanland and Dalarna have been off limits since Friday following the discovery of dead wild boar.
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