Ran Cheng is an MPP candidate at the Harris School of Public Policy.China is indulging in coal again. It built 38.4GW of new coal-fired power installations in 2020, three times as much as the rest of the world. The expansion continued in 2021 and early 2022. G... More »
China just launched a long-awaited national emissions trading scheme (ETS). As the largest current emitter accounting for more than a quarter of world’s total carbon emissions, this move can potentially have major repercussions. The official commitment to the ... More »
Surrounding the Arctic Ocean, lying along a nearly continuous 10,000 mile (16,000 km) ring of inhospitable tundra, one of Earth’s most important environmental assets is beginning to collapse.Permafrost — perennially frozen soil and rock — may not look like muc... More »
With less than five percent of the world’s population, the United States consumes about one-fifth (21 percent) of the world’s energy.In a working paper for The Hamilton Project published in 2012, Greenstone and Looney find that the true social cost (private co... More »
A new model suggests that future costs of climate change have been underestimated. More »
Co-benefits from improved air quality can offset some if not all of the near-term costs of carbon-reduction policies. If the US commits to buying a carbon policy, citizens will also get reduced air pollution and improved health for free. More »
New York's failed plan for congestion pricing has lessons for policymakers everywhere. More »
A researcher evaluates two lesser-known methods to spur renewable energy production. He finds them wanting. More »
The business of food is bad for the planet. But the problem isn't just a first-world one. More »
GDP-linked carbon intensity targets lure wary parties to the climate negotiating table. But are these targets any more than a tease? More »
An energy policy analyst walks us through the muck on the Keystone Pipeline. More »
MIT’s Howard J. Herzog explores the central issues involved in transforming carbon capture and storage (CCS) from a boutique technology to a broadly commercial one. More »