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Human causes of climate change include industrial activity, agricultural practices and deforestation. The earth's own feedback loop, which increases the amount of water vapor in the atmosphere and warms the oceans, accelerates the warming and contributes to climate change, a related phenomenon.
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.
Modern global warming is the result of an increase in magnitude of the so-called greenhouse effect, a warming of Earth’s surface and lower atmosphere caused by the presence of water vapour, carbon dioxide, methane, nitrous oxides, and other greenhouse gases.
What causes global warming? How is global warming linked to extreme weather? What are the other effects of global warming? Where does the United States stand in terms of global-warming...
Human activity is driving climate change, including global temperature rise. The average temperature of the Earth is rising at nearly twice the rate it was 50 years ago. This rapid warming...
As greenhouse gas emissions blanket the Earth, they trap the sun’s heat. This leads to global warming and climate change. The world is now warming faster than at any point in...
How does global warming work? Where does global warming occur in the atmosphere? Why is global warming a social problem? Where does global warming affect polar bears? What is ocean warming?
Vital Signs of the Planet: Global Climate Change and Global Warming. What is the “greenhouse effect”? What is causing it? Are humans to blame? What does solar irradiance have to do with it? Answers here.
Since the Industrial Revolution, human activities have released large amounts of carbon dioxide and other greenhouse gases into the atmosphere, which has changed the earth’s climate. Natural processes, such as changes in the sun's energy and volcanic eruptions, also affect the earth's climate.
Scientists know that the warming climate is caused by human activities because: Human activities have increased the abundance of heat-trapping gases in the atmosphere. This increase is mostly due to burning fossil fuels, such as coal, oil, and natural gas.