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The 2019 IPCC Special Report on the Ocean and Cryosphere in a Changing Climate defines a tipping point as: "A level of change in system properties beyond which a system reorganises, often in a non-linear manner, and does not return to the initial state even if the drivers of the change are abated. For the climate system, the term refers to a ...
Climate change can also be used more broadly to include changes to the climate that have happened throughout Earth's history. [32] Global warming—used as early as 1975 [33] —became the more popular term after NASA climate scientist James Hansen used it in his 1988 testimony in the U.S. Senate. [34] Since the 2000s, climate change has ...
A study suggests, "path dependencies, increasing returns to scale and learning-by-doing cost reductions can produce sudden, tipping-point-like transitions that cannot be extrapolated from past system behaviour", and that "historically, technological innovation and government policies often motivated by energy security concerns have also, in ...
Climate change, which has been building dramatically over the last 75 years, will be the impetus for the next great turning.
After division over Russia's war in Ukraine, differences about climate change goals have emerged as another stumbling block for G20 leaders to iron out at their two-day meeting in New Delhi, six ...
350.org named the Keystone XL pipeline as a critical issue and turning point for the environmental movement, as well as for then-President Barack Obama's legacy. NASA climatologist James Hansen labeled the Keystone XL pipeline as "game over" for the planet and called the amount of carbon stored in Canadian bitumen sands a "fuse to the largest carbon bomb on the planet".
The greenhouse effect on Earth is defined as: "The infrared radiative effect of all infrared absorbing constituents in the atmosphere.Greenhouse gases (GHGs), clouds, and some aerosols absorb terrestrial radiation emitted by the Earth's surface and elsewhere in the atmosphere."
World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.