President Obama reminded the world this week that climate change is going to become an increasingly potent policy driver. Some companies are more prepared than others to deal with a warming world and the potential business risk that comes with it. Fool contributor Sara Murphy discusses how corporations are getting ready for these new pressures.

Sara Murphy has no position in any stocks mentioned. Follow her on Twitter: @SMurphSmiles. The Motley Fool recommends Exelon and Unilever. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.