How long to save the planet from climate catastrophe? This clock is ticking down

For the past two decades, a giant digital display in Manhattan’s Union Square has clocked up the accumulation of days, hours, minutes and seconds for the thousands of New Yorkers who hurry past it each day. Now, for the first time, it’s counting down: Revealing just how little time we have left to tackle the climate crisis before the planet is past a tipping point of irreversible change.

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