JUntil when will it be necessary to accumulate the evidence so that political and economic decision-makers deign to counter the derailment of the climate machine? With its 2021 report, Copernicus, the European Earth observation system, is adding a new contribution to the stack. While the vintage has rather left a cool and humid impression in France – the fault of a well-watered summer – 2021 ranks among the seven hottest years on record worldwide …