Environment & Climate Change

In its push for greener energy, Washington is giving biofuels a boost. But just how green are they? Daniel Schrag, Co-Director of the Science, Technology, and Public Policy Program, argued the case for biofuels, opposite Carlisle Ford Runge, who argued against them.

Maintaining bitcoin and other cryptocurrencies causes about 0.3 percent of global CO₂ emissions. That may not sound like a lot, but it’s more than the emissions of Switzerland, Croatia, and Norway combined. As many cryptocurrencies crash and the FTX bankruptcy moves into the litigation stage, regulators are likely to scrutinize the crypto world more than ever before. This presents a perfect opportunity to curb their environmental damage.

The good news is that cryptocurrencies don’t have to be carbon intensive. In fact, some have near-zero emissions. To encourage polluting currencies to reduce their carbon footprint, we need to force buyers to pay for their environmental harms through taxes.

Russian military action in Ukraine could trigger an energy crisis even more serious than the one already hitting Europe. As has been pointed out, should the West hit Russia with severe new sanctions, President Vladimir Putin could cut off natural gas exports, leaving the continent shivering through midwinter. Yet there is another potential weapon of Russia’s that’s been less discussed and might be very effective: An ability to disrupt global oil markets, which would directly hit U.S. consumers.

Stephen Walt enumerates the challenges the U.S. president should prepare for in 2021.

Joseph Nye analyzes why the Cold War metaphor in relation to  the U.S. and China, although convenient, is lazy and potentially dangerous. It obscures and misleads us by underestimating the real challenge we face — and offering ineffective strategies.

Stephen Walt argues that what 9/11 means to future generations depends less on what actually occurred on that day or on how the United States and others responded and more on what the United States and others do from this day forward. 

During the Cold War, US grand strategy focused on containing the power of the Soviet Union. China's rise now requires America and its allies to develop a strategy that seeks not total victory over an existential threat, but rather managed competition that allows for both cooperation and rivalry within a rules-based system.

Stephen Walt asks whether the United States is a good model for other liberal states and whether its policy judgments are ones that others should trust and follow, especially with respect to foreign policy.  He argues that—on balance—the answer to both questions is "no."

The success of U.S. President Joe Biden's China policy will depend on whether the two powers can cooperate in producing global public goods, while competing in other areas. The U.S.-China relationship is a "cooperative rivalry," in which the terms of competition will require equal attention to both sides of the oxymoron.  Joseph Nye argues that it will not be easy.

This study provides a whole-systems simulation on how to halve global CO2 emissions by 2050, compared to 2010, with an emphasis on technologies and costs, in order to avoid a dangerous increase in the global mean surface temperature by end the of this century.