Through a novel yet controversial application of the Congressional Review Act (CRA), in June the federal government disapproved the Environmental Protection Agency’s (EPA’s) waiver for California’…

In 2009, the U.S. Environmental Protection Agency (EPA) published what is commonly referred to as the “endangerment finding.” Prompted by the U.S. Supreme Court’s landmark decision in …

In the next few years, the International Maritime Organization will create the world’s first greenhouse gas (GHG) pricing mechanism to reduce emissions from shipping. The United States may be…

The iron and steel sector contributes nearly 7% of global anthropogenic GHG emissions. As global climate commitments tighten and industrial decarbonization becomes urgent, green steel, produced…

On February 7, 2024, the U.S. Environmental Protection Agency (EPA) announced a final rule imposing a stricter limit for the fine particulate matter (PM2.5) national ambient air quality standard (…

The name of the climate game right now is fast, sustained progress. The world needs this both politically and technologically to effectively fight climate change. Progress was achieved both…

Carbon offsets allow polluters to pay someone else to reduce, avoid, or remove emissions to counterbalance their own emissions. For some, carbon accounting concerns render offsets a necessary evil…

The Inflation Reduction Act (IRA) of 2022 added seven new sections to the Clean Air Act (CAA) and provided the U.S. Environmental Protection Agency (EPA) with substantial new authorities and…

On October 29, 2021, the U.S. Supreme Court granted certiorari in West Virginia v. Environmental Protection Agency, a petition filed by several states and coal companies attacking the U.S…

On the final day of the 2021-2022 term, the U.S. Supreme Court released its decision in West Virginia v. Environmental Protection Agency. The majority (6-3) opinion limited the U.S.…