The Perisutus Colossus is an extinct marine mammal believed to have lived about 40 million years ago. It may have weighed up to 340 tons, which would make it by far the most massive animal ever to have existed. If they're right, that means it's more than three times the size of an average blue whale.
Despite cosying up with Russia and accusing America of trying to topple him, the newly re-elected president now appears to be flirting with old allies. But there is reason to be sceptical. A global survey shows that liberal values may not be catching on as some expected (09:54). And, have scientists found the biggest animal that ever lived (18:36)?
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