They are big. They are beautiful. And they are back. The return of the humpback whale to greater numbers than observed in decades is part of a larger revival of marine mammals in the Salish Sea. It is ...
In August 1986, Lake Nyos in Cameroon suddenly released a massive cloud of carbon dioxide that swept through nearby villages. The invisible gas rolled downhill at nearly 100 km/h, suffocating people, ...
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