President Barack Obama says he will seek vigorous climate-change policy. Efforts to curb greenhouse gases pose considerable economic pitfalls, as well as opportunities.

The Canadian oil sands present an important challenge to policymakers: they promise energy security benefits but present climate change problems. Michael A. Levi assesses the energy security and climate change effects of the oil sands and makes recommendations for U.S. policymakers within the context of broader bilateral relations with Canada.

Scott Borgerson and Caitlyn Antrim argue that the United States should show leadership on the formation of an Arctic "polar park" for international scientific research.

In terms of world trade, U.S. global warming policy and its eco-tariffs are Smoot-Hawley on steroids, Peter Foster asserts.

As the U.S. Congress takes on President Obama's call for a cap-and-trade system, Kevin M. Dempsey, a partner at Dewey & LeBoeuf, argues that it should look toward Europe's experience. In the second part of his Globalist Paper, he explains the benefits of carbon auctions--and the complications they may create under WTO law.

The idea of creating green jobs drew great attention as the stimulus package made its way through Congress. Defining those jobs is difficult, however, and economists say many may simply displace existing jobs in the old carbon-based economy.

Barack Obama says he is serious about sharply reducing carbon emissions. But some experts see the recession, and competing "green" agendas, posing major obstacles to new climate change policy.

Kenneth Lieberthal and David Sandalow, two fellows at the Brookings Institution, recommend ways to overcome obstacles to cooperation between the United States and China on climate change.

The Asia Society, in collaboration with the Pew Center on Global Climate Change, presents a roadmap with suggestions for Chinese and American leaders that explains how to improve relations necessary for combatting climate change.

Al Gore, former vice president of the United States, tells Fareed Zakaria that whatever assistance the auto industry gets "should be focused on speeding the changes that are absolutely essential to ensure that our companies are competitive in the global marketplace."

Many countries are reducing or ending fuel subsidies in the face of high fuel costs and the spreading financial crisis. Though the cuts may prove unpopular, some experts say they could help ease global oil demand.

Scott Borgerson visually explores the changing Arctic using an interactive map.