Pollution

Despite high expectations and an ambitious agenda, the Rio+20 Conference failed to deliver meaningful progress on environmental issues. Fortunately, government inaction is not the whole story: the private sector, NGOs, and civil society groups are working to fill the void.

Coal combustion is the largest source of carbon dioxide emissions on the planet. But the fuel isn’t going away anytime soon, since demand for it is ballooning in the developing world. So instead of indulging in quixotic visions of a coal-free world, policymakers should focus on supporting new technologies that can reduce how much carbon coal emits.

Proponents of renewable energy have had a hard time lately, thanks to the recession, competition from natural gas, and embarrassments such as Solyndra. But it’s too early to give up, since recent advances have made wind and solar power more competitive than ever. Still, governments must redesign their policies and help renewables slash costs.

In their single-minded pursuit of economic growth, China's leaders have long overlooked public health -- which, by some measures, is now worse than under Mao. Despite recent reforms, China's citizens keep getting sicker, threatening the country's health-care system, the economy at large, and even the stability of the regime.