Countries are gathering in Brazil at the COP30 summit to take stock of climate change. As in past summits, the negotiations are starting on the back foot: countries already aren't meeting their goals to cut heat-trapping emissions from burning fossil fuels.

The world has barely budged in its efforts to combat climate change compared to one year ago, according to a new report from the United Nations. If countries stay on that track, the planet will warm by about 5 degrees Fahrenheit by the end of the century, compared to the pre-industrial temperatures of the mid-1800s. That's slightly better than projections made last year, which showed 5.5 degrees Fahrenheit of warming – but much of that progress could soon be cancelled out by the U.S.

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The Trump Administration is not sen

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