From floods and wildfires to inaction and urgency: These are the top climate and weather stories of 2021

The climate crisis took a catastrophic toll across the globe in 2021. From the Arctic to Louisiana and to China's Henan province, signs that climate change is already altering our weather were everywhere. In the United States, historic flooding trapped and killed residents in submerged basements. In Canada, an entire town was erased by a wildfire fueled by extreme heat. Rain fell at the summit of Greenland for the first time.
As climate disasters mounted, the world aligned around combating the crisis: Scientists published a landmark report that concluded humans are unequivocally to blame; US President Joe Biden reentered the Paris Agreement in the early days of his administration; world leaders met at the UN climate summit in Glasgow, Scotland, to negotiate solutions. But promises were not met with action in 2021, and humans are pumping more planet-warming emissions into the atmosphere than ever.
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