A global-scale, multi-sectoral, regional assessment of the impacts of climate change that may be avoided by emissions policies is reported this week in Nature Climate Change.

Although a number of studies have looked at the effects of proposed mitigation policies on global (more…)

MIT’s annual Energy Conference, held last Friday and Saturday, featured an impressive array of young engineers, scientists, and renewable energy entrepreneurs. It also included a sizeable number of more established players in the energy field. And the question left hanging at the end of the conference was whether this group of inventors and dreamers (more…)

The sheer abundance of recently discovered natural gas resources in the U.S. could drive down gas and electricity prices in the next few decades, yield an overall increase in energy use, and stunt the nation’s still-emerging renewable energy sector, a new report says.

Using economic modeling, researchers at the (more…)

At a time when many are adopting the narrative that carbon markets are faltering, the European Union (EU) is aggressively pursuing the expansion of theirs to include aviation. One of only two mandatory greenhouse gas (GHG) cap-and-trade systems in the world, the EU Emissions Trading Scheme (ETS) plans to fold in a (more…)

Who says climate policy is dead in the U.S.? By a vote of four to one, the New Mexico Environmental Improvement Board (EIB) voted Monday to adopt a new state pollution limit requiring the state’s largest emitters to reduce their carbon dioxide emissions by 3 percent per year from 2010 levels starting in 2013.

Monday’s ruling is the culmination of a two (more…)

Experts from both sides of the U.S. climate debate are urging more federal investment in clean energy innovation — and the scrapping of cap-and-trade proposals — in the aftermath of the U.S. Senate’s failure to pass a climate bill. In a joint report, the American Enterprise Institute, a conservative think tank; the more left-leaning Brookings Institution; and the (more…)

(Reuters) – The U.N. climate change chief urged governments on Monday to make real steps toward a new treaty to fight global warming or risk throwing negotiations into doubt.

Negotiators are meeting in the northern Chinese port city of Tianjin to try reach agreement on what should follow the (more…)

Amid a growing call for reducing atmospheric concentrations of CO2 to 350 parts per million, a group of economists maintains that striving to meet that target is a smart investment — and the best insurance policy humanity could buy.

The climate change news from Washington is cautiously encouraging. No one in power is listening to the climate skeptics any more; the economic stimulus package included real money for clean energy; a bill capping U.S. carbon emissions emerged, battered but still standing, from the House of Representatives, and might even survive the Senate. This, along with stricter emission standards in Europe and a big push for clean energy and efficiency standards in China, provides grounds for hope for genuine progress on emissions reduction.

But while climate policy is finally moving forward, climate science is moving faster. One discovery after another suggests the world is warming faster, and climate damages are appearing sooner, than anyone had expected. Much of the policy discussion so far has been aimed at keeping the atmospheric concentration of CO2 below 450 parts per million (ppm) — which was until recently thought to be low enough to prevent dangerous levels of warming. But last year, James Hansen, NASA’s top climate scientist, argued that paleoclimatic evidence shows 450 ppm is the threshold for transition to an ice-free earth. This would imply a catastrophic rise in sea levels, eventually flooding all coastal cities and regions.

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