2021: a year of climate crisis in review

A look back at 12 months of key summits, devastating weather and alarming discoveries

The year began with a counting up of the damage after the catastrophic extreme weather events of 2020, from fires to floods. Looking at the US alone, California more than doubled its previous annual wildfire record with more than 1.7m hectares (4.1m acres) burned and Nasa concluded that 2020 had been the joint hottest year on record. The US's Noaa and the UK Met Office put it in close second to 2016.

In my view, we've already waited too long to deal with this climate crisis and we can't wait any longer. We see it with our own eyes, we feel it, we know it in our bones, and it's time to act.

Joe Biden