‘Day of hope’: America officially rejoins Paris climate accord

Joe Biden reversed the former President’s decision to withdraw from the treaty when he assumed office in January

UN and UK launch mission to clear up space junk

Space debris can be a hazard to active satellites and spacecraft

World celebrates US return to Paris Accord under President Biden

The UN Chief António Guterres, the Prime Minister Boris Johnson and the COP26 President were among the first to hail Biden’s move

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