Potential regulatory tools under the Clean Air Act--beyond the greenhouse gas rules--could accelerate development and deployment of potentially game-changing clean air and energy technologies to reduce emissions in the nation's key industrial sectors.

The era of pessimism is over in Africa. In eight of the last 10 years, the African "lion" economies have grown faster than even the Asian "tigers." But if this growth is not invested in human capital and diversifying economies, there is a risk that Africa will once again be known as the lost continent.

If EU and the U.S. can show that we want to open markets and resist protectionism even in this moment of crisis, it will send a powerful signal to the rest of the world about the continuing strength of the international economic order.