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Twenty years of blogging in hindsight

Real Climate

It’s 20 years since we started blogging on climate here on RealClimate (December 10, 2004). There is one graph that perhaps tells the story of what has happened since 2004, and it’s the Keeling curve shown in the figure below. In a nutshell, they are responsible for climate change, mainly due to an increased greenhouse effect.

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“A Historic Day”: the World Court’s Big Climate Opinion

Legal Planet

It’s been a long time coming but nations of the world officially have a legal obligation to limit their emissions of greenhouse gases or else pay reparations for the harms of climate change. Photo credit: UN/ICJ/Jeroen Bouman (CC BY-NC-ND 2.0) Third, there will be novel legal consequences for nations arising out of this Advisory Opinion.

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Operationalizing Climate Science

Real Climate

Where, at the beginning, there was really only one input parameter (the CO 2 concentration) that needed to be coordinated, the inputs have now broadened to include myriad forcings related to other greenhouse gases, air pollution, land surface change, ozone, the sun, volcanoes, irrigation, meltwater etc.

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Cattle and Climate Change: Putting Sustainability in Perspective

HumanNature

Beginning with the United Nations Food and Agriculture Organization (FAO) release of the report Livestocks Long Shadow in 2006, the totality of the contribution of cattle to livelihoods, food security, and ecosystem services has been questioned when contrasted with their contribution to greenhouse gas emissions and the environmental equilibrium.

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Good & Bad Environmental News From the U.S. Supreme Court

Legal Planet

Both lawsuits ask the federal courts to strike down EPA’s approval of a “waiver” under section 209(b) of the Clean Air Act allowing California to adopt and enforce motor vehicle emission standards for greenhouse gasses more stringent than those EPA itself sets for the rest of the nation.

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PJM Electric Auction Impacts: 1 In 5 PA Households Report Problems Now Paying Energy Bills; Electric Utility Shutoffs Up 38.1% So Far This Year

PA Environment Daily

The other one is increased enhanced tools for utilities to terminate service that passed the General Assembly in 2004, 2005." “That big spike in 2006, 2007 really as a result of a couple of functions, one of which is the economy at the time and the recession that occurred. MW-Day For 2025/26 Delivery Compared To $28.92/MW-Day

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The California Legislature: Where Global Warming is Real and Science Still Matters

Union of Concerned Scientists

This policy sets a declining limit on greenhouse gas emissions and the state distributes emission permits — either directly or through quarterly auctions — to companies, which can then sell them to others if they succeed in reducing their own pollution.