A female polar bear and her cub on Hudson Bay, near Churchill, Manitoba, in 2022.

The Caribbean, seen from the International Space Station. Sponges collected deep below the surface carry chemical imprints that reflect historical water temperatures.

Only about 1 percent of rare earth metals in old electronic products are currently reused or recycled, researchers estimate.

Icebergs calved from the Sermeq Kujalleq glacier in the Ilulissat Icefjord in Greenland in 2021.

As humpback whale populations recover from the now mostly banned whaling industry, they are increasingly sharing time and territory with fishermen.

The most promising paths for avoiding 1.5 degrees of warming are clearly gone, said one climate scientist.

David Suzuki, the science broadcaster, prolific author and perhaps Canada’s most prominent environmentalist, on Quadra Island, in British Columbia.

Avian flu has killed countless farmed and wild birds. Scientists worry that it could acquire mutations that help it spread more easily among humans, potentially setting off a pandemic.

Piet De Becker, the manager of the Doode Bemde nature preserve, walking in the sanctuary, which has helped prevent catastrophic flooding in nearby Leuven, Belgium.

The scene in Nanxinfang, a village outside Beijing, after flooding in August.