Web Results

en.wikipedia.org/wiki/Global_warming

Main article: Attribution of recent climate change. By itself, the climate system ...

climate.nasa.gov/causes

Most climate scientists agree the main cause of the current global warming trend is human expansion of the "greenhouse effect" — warming that results when ...

www.ucsusa.org/global_warming/science_and_impacts/science/human-contribution-to-gw-faq.html

Aug 1, 2017 ... Unprecedented warming. Earth's surface has undergone unprecedented warming over the last century, and especially in this century.

www.nrdc.org/stories/global-warming-101

Mar 11, 2016 ... Everything you wanted to know about our changing climate but were too afraid to ask. ... Q: What causes global warming? A: Global warming ...

www.nationalgeographic.com/environment/global-warming/global-warming-causes

The temperature of the earth is rising at nearly twice the rate it was 50 years ago. This rapid rate and pattern of warming, scientists have concluded, cannot be ...

www.edf.org/climate/9-ways-we-know-humans-triggered-climate-change

Humans are the main cause. ... In fact, we are statistically more confident that humans cause climate change than ... 7 ways global warming is affecting daily life.

19january2017snapshot.epa.gov/climate-change-science/causes-climate-change

Dec 27, 2016 ... These factors have caused Earth's climate to change many times. .... The main greenhouse gases .... see the Greenhouse Gas Emissions website, including an expanded discussion of global warming potentials and how they ...

epa.gov/climatechange

Apr 28, 2017 ... Thank you for your interest in this topic. We are currently updating our website to reflect EPA's priorities under the leadership of President ...

www.wwf.org.au/what-we-do/climate/causes-of-global-warming

The burning of fossil fuels, deforestation and farming are major causes of global warming.