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In common usage, climate change describes global warming —the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to Earth's climate.
Climate change mitigation (or decarbonisation) is action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include conserving energy and replacing fossil fuels with clean energy sources. Secondary mitigation strategies include changes to land use and removing carbon dioxide (CO 2) from ...
Satoshi Matsushima. Website. www .columbia .edu /~jeh1. James Edward Hansen (born March 29, 1941) is an American adjunct professor directing the Program on Climate Science, Awareness and Solutions [ 4] of the Earth Institute at Columbia University.
As of 2021 the remaining carbon budget for a 50-50 chance of staying below 1.5 degrees of warming is 460 bn tonnes of CO 2 or 11 + 1 ⁄ 2 years at 2020 emission rates. [11] Global average greenhouse gas per person per year in the late 2010s was about 7 tonnes [12] – including 0.7 tonnes CO 2 eq food, 1.1 tonnes from the home, and 0.8 tonnes from transport. [13]
Climate restoration is the climate change [ 2] goal and associated actions to restore CO 2 to levels humans have actually survived long-term, below 300 ppm. This would restore the Earth system [ 3] generally to a safe state, for the well-being of future generations of humanity and nature. Actions include carbon dioxide removal from the Carbon ...
The California Global Warming Solutions Act of 2006 (commonly known as AB 32) mandates a reduction in greenhouse gas emissions to 1990 levels by the year 2020. [269] The Environmental Defense Fund and the Air Resources Board recruited staffers with environmental justice expertise as well as community leaders in order to appease environmental ...
Drawdown (climate) Climate drawdown refers to the future point in time when levels of greenhouse gas concentrations in the atmosphere stop climbing and start to steadily decline. [ 1] Drawdown is a milestone in reversing climate change and eventually reducing global average temperatures. [ 2] Project Drawdown refers to a nonprofit organization ...
On a scale of 1 out of 7, where higher numbers indicated greater disagreement, "global warming is already underway" had a mean rating of 3.4, and "global warming will occur in the future" had an even greater agreement of 2.6 Surveyed scientists had less confidence in the accuracy of contemporary climate models, rating their ability to make ...
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