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  1. www.ucsusa.org › resources › are-humans-major-cause-global-warmingAre Humans the Major Cause of Global Warming? - Union of...

    14 lip 2009 · Scientists agree that global warming is caused mainly by human activity. Specifically, the evidence shows that certain heat-trapping gases, such as carbon dioxide, are warming the world—and that we release those gases when we burn fossil fuels like coal, oil, and gas.

  2. www.nationalacademies.org › climate-change-humans-are-causing-global-warmingHumans are causing global warming | National Academies

    5 sie 2019 · Scientists know that the warming climate is caused by human activities because: They understand how heat-trapping gases like carbon dioxide work in the atmosphere; They know why those gases are increasing in the atmosphere; They have ruled out other possible explanations

  3. www.climate.gov › what-evidence-exists-earth-warming-and-humans-are-main-causeWhat evidence exists that Earth is warming and that humans are...

    12 paź 2022 · There is overwhelming scientific evidence that Earth is warming and a preponderance of scientific evidence that human activities are the main cause.

  4. www.nrdc.org › stories › what-are-causes-climate-changeWhat Causes Climate Change? Human and Natural Causes - NRDC

    13 wrz 2022 · A planet that’s warmer right now than at any other point in human history, and getting ever warmer. This global warming has, in turn, dramatically altered natural cycles and weather...

  5. www.bbc.co.uk › news › science-environment-58954530Climate change: How do we know it is happening and caused by...

    25 paź 2021 · How do we know humans are responsible for global warming? Greenhouse gases - which trap the Sun's heat - are the crucial link between temperature rise and human activities.

  6. science.nasa.gov › climate-change › causesThe Causes of Climate Change - Science@NASA

    Human activities are driving the global warming trend observed since the mid-20th century. The greenhouse effect is essential to life on Earth, but human-made emissions in the atmosphere are trapping and slowing heat loss to space. Five key greenhouse gases are carbon dioxide, nitrous oxide, methane, chlorofluorocarbons, and water vapor.

  7. education.cfr.org › how-humans-cause-climate-changeHow Humans Cause Climate Change - education.cfr.org

    Understanding how greenhouse gases originate and how to measure their effects on the climate is crucial for tackling the biggest environmental challenge of our time. In this resource, you’ll...