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The Trumpeter Swan returns from the brink of extinction

The trumpeter swan was on the brink of extinction 50 years ago. But restoration efforts in Ontario have helped the species make a comeback throughout Canada and the United States, writes Karen Weintraub

How scientists created the first ever image of a black hole

Against the dark backdrop of the inky beyond, capturing one is a near impossible task

Water just below surface of moon ejected by meteoroid strikes

Puffs of vapour support hypothesis of larger reserves at greater depths