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We drop millions of tons of iron and chemical nutrients into the ocean, hoping to stimulate the growth of phytoplanktons that will trap carbon dioxide from the air and cool the planet.
Unfortunately, this triggers a horrible, unexpected cascade of impacts that no one anticipated. Around 80 per cent of all ocean life dies within two months. WHOOPS!
No one is sure exactly what went wrong, because all the scientists suffocated to death before they could do any studies. So did all other humans on the planet, including you.
