Incoherent U.S. energy and climate policies have cast a pall over the entire economy and are putting U.S. companies at a serious global disadvantage. The authors offer 10 prescriptions for reforms, two of which they describe in detail. First, they argue that the U.S. should impose a gradually increasing carbon charge; this would help internalize environmental costs, drive investment in energy efficiency, encourage innovation in renewable power, and raise substantial revenues that could reduce the national debt. Second, they say, the government should curb or redirect unwise energy subsidies and increase funding for clean-energy R&D. Environmental stewardship need not be an economic burden, they emphasize; on the contrary, investing in sustainability can enhance corporate and national competitiveness.

Executives know that how they respond to the sustainability challenge will profoundly affect the competitiveness of their organizations - and perhaps even their survival. Yet most are struggling with how to integrate environmental efforts into their core business strategies. Many have a hodgepodge of green initiatives but no overarching vision or plan. The problem is not that they don't see sustainability as a strategic issue. Rather it's that they think they're facing an unprecedented challenge. But there is a roadmap, say authors David Lubin and Dan Esty. They argue that sustainability is a "megatrend," a transformative change in the competitive landscape - like the rise of the quality movement in the 1970s and IT in the 1980s and 1990s - whose course can be predicted. By understanding how firms won in prior megatrends, executives can craft the strategies and systems they'll need to gain advantage in this one. The key: Companies that pulled ahead in prior megatrends developed early capabilities in leadership, tools and assessment methods, strategy development, management integration, and reporting and communication.

Climate change will affect everything businesses do, as government efforts to mitigate carbon emissions cause their prices to rise steeply. This special edition of Forethought takes a hard-nosed look at the risks and opportunities of climate change. Michael E. Porter and Forest L. Reinhardt argue that the effects of climate change on companies' operations are now so tangible and certain that the issue is best addressed with the tools of the strategist, not the philanthropist. Reinhardt also posits, in another article, that success in a carbon-constrained world will be determined by innovation and acumen, requiring companies to make bold moves. Peter Schwartz explains that firms that do business in vulnerable regions can advance their interests if they help those areas adapt to global warming. Daniel C. Esty notes increasing pressure on corporations to reduce emissions, predicting that companies that fail to do so will face grave consequences. Andrew J. Hoffman says that corporations need to know what regulatory issues are at stake--and where. Alyson Slater of Global Reporting Initiative discusses the challenges and benefits of voluntary disclosure. Auden Schendler cautions companies buying up renewable energy certificates that they could end up tarnishing their green credentials. Theodore Roosevelt IV and John Llewellyn explain that virtually any firm in any sector can reap the benefits of investors' surging demand for green business ideas. Vicki Bakhshi and Alexis Krajeski show how climate change will affect businesses in the midterm. Maria Emilia Correa describes a key plank of the strategy at Masisa, a company in Chile, that is engaging B2B customers in efforts to become greener. Mark Way and Britta Rendlen explain why insurer Swiss Re is persuading employees to reduce their carbon footprints. HBR also provides a forecast of the extreme climate phenomena likely to occur in the future, and their expected repercussions on industry, agriculture, and settlements.