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What sparked global warming? People did. | Environmental Defense ...

www.edf.org/climate/what-sparked-global-warming-people-did

Carbon dioxide has caused most of the warming, science tells us. We can ... Scientists are more confident than ever that humans are causing global warming.

Causes of Global Warming: the Human Impact

globalwarming-facts.info/causes-global-warming-human/

Anthropogenic emissions contribute substantially to global warming. ... This is largely due to human activities; primarily the burning of fossil fuels, but also due to ...

Climate Change: Vital Signs of the Planet: Causes

climate.nasa.gov/causes

Vital Signs of the Planet: Global Climate Change and Global Warming. What is the ... On Earth, human activities are changing the natural greenhouse. Over the ...

Is Human Activity Primarily Responsible for Global Climate Change ...

climatechange.procon.org/view.answers.php?questionID=001445

Apr 7, 2015 ... "Multiple lines of independent evidence confirm that human activities are the primary cause of the global warming of the past 50 years.

How do human activities contribute to climate change and how do ...

www.eea.europa.eu/themes/climate/faq/how-do-human-activities-contribute-to-climate-change-and-how-do-they-compare-with-natural-influences

Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gases, aerosols (small particles), and  ...

Human Caused Global Warming — OSS Foundation

ossfoundation.us/projects/environment/global-warming/human-caused

How do we know current global warming is human caused, or man made? Is global ... How do we know that recent CO2 increases are due to human activities ?

Empirical evidence that humans are causing global warming

www.skepticalscience.com/empirical-evidence-for-global-warming.htm

Direct observations find that CO2 is rising sharply due to human activity. Satellite and surface measurements find less energy is escaping to space at CO2 ...

Human Global Warming: What Are the Main Causes? | PlanetSave

planetsave.com/2009/04/18/human-global-warming-what-are-the-main-causes/

Apr 18, 2009 ... To understand how humans cause global warming, it is important that you are aware of the link between your daily activities and the ...

How Do Humans Cause Global Warming? | PlanetSave

planetsave.com/2009/02/02/how-humans-cause-global-warming/

Feb 2, 2009 ... Humans cause global warming with our unique ability to capture and use .... I think the clear point was which activities cause the warming.

How do Human Activities Contribute to Climate Change and How do ...

oceanservice.noaa.gov/education/pd/climate/factsheets/howhuman.pdf

Human activities contribute to climate change by causing changes in Earth's ... these gases and particles can lead to a warming or cooling of the climate system.

Answer
There is strong evidence that human activity is a major cause of global warming.
In a study, models based on man-made emissions of greenhouse gases matched the real world observations almost precisely.
More Info

Global Warming is Human Caused - National Wildlife Federation

www.nwf.org

Illustration of how global warming works. Human activity--such as burning fossil fuels--causes more greenhouse gases to build up in the atmosphere. As the ...

Do We Know that Humans Are the Major Cause of Global Warming

www.ucsusa.org

How Do We Know that Humans Are the Major Cause of Global Warming? ... that emissions of heat-trapping gases from human activities have caused “most of ...

Climate Change ProCon.org

climatechange.procon.org

Is Human Activity Primarily Responsible for Global Climate Change? .... Global warming caused by human-produced greenhouse gases is causing the Arctic ice  ...