Environment
Never-before-seen gatherings of hundreds of humpback whales
The marine giants are gathering to feed in super-groups of 200, and no one knows why. It could be their natural behaviour when populations are at normal levels
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The marine giants are gathering to feed in super-groups of 200, and no one knows why. It could be their natural behaviour when populations are at normal levels
Efforts to give one single standard of height could help us understand sea level rise, remeasure mountains – and rewrite the textbooks in other ways, too