2021. Countries Fail the Climate Change Challenge—Again. “A code red for humanity.” That’s how UN Secretary General António Guterres’ described the UN report released in August that concluded that humanity faces catastrophic climate change unless the emission of heat-trapping gases is slashed. But one didn’t need to read the 4,000-page report to know that. Extreme weather dominated the news in 2021, as it has for much of the past decade. Record drought wracked the American southwest. Record flooding devastated Belgium and western Germany. Epic wildfires tore through Greece. Late season monsoons ravaged India and Nepal. Climate optimists could find some developments to cheer in 2021. President Biden committed the United States to rejoining the Paris Climate Agreement on his first day in office. China agreed in September to discontinue financing coal-fired power plants overseas, and Iceland opened a facility to take carbon dioxide out of the air. At the COP-26 meeting in Glasgow in November countries pledged to