Climate change has become such a significant phenomenon that many businesses are starting to implement strategies to deal with it. Some -- like Honda -- learned the hard way after major losses. But now, even Wal-Mart (WMT 1.32%) is taking steps to "green" its supply chain. Major corporations are taking measures that may be motivated by the bottom line but that also benefit the environment. With a new technology that companies like BP are championing, even oil wells may have a role to play in carbon capture.

John Vechey of PopCap Games recently joined The Motley Fool for a climate change summit. His first panel guests were Dr. Rachel Cleetus and Dr. Joe Casola. Dr. Cleetus is a climate economist with the Union of Concerned Scientists, where she advocates for effective global warming policies at the state, regional, federal, and international levels. Dr. Casola is program director for science and impacts at the Center for Climate and Energy Solutions, or C2ES, which works to assess the current state of knowledge regarding climate change and its impacts, and to promote actions that strengthen climate resilience. Both of them had fascinating things to say about this topic.