Numbers in Ukraine and low seas in Chagos

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Following Russia’s invasion of Ukraine, we take a look at some of the numbers coming out of the conflict and ask how to know which information you can trust during a war. We also investigate the perplexing claim that the seas around the Chagos Islands are 100m lower than the seas around the rest of the world. (Convoy of Russian military vehicles heading towards the Donbas region of Eastern Ukraine/ Getty Images)