25 years ago , the Exxon Valdez supertanker created a gigantic oil spill in Alaska waters . Mindy Lubber : Top companies such as Exxon are ready to act on climate change . She says businesses realize how carbon pollution drags down their bottom lines . Some are already pulling out of riskier carbon-intensive investments such as coal companies and are setting specific targets for elevating clean energy investments . The Associated Press reports that more than half of U.S. states have passed laws requiring utilities and other large energy users to cut greenhouse gas emissions by at least 20 percent from 2005 levels within five years.
25 years ago , the Exxon Valdez supertanker created a gigantic oil spill in Alaska waters . Mindy Lubber : Top companies such as Exxon are ready to act on climate change . She says businesses realize how carbon pollution drags down their bottom lines . The Associated Press reports that more than half of U.S. states have passed laws requiring utilities and other large energy users to cut greenhouse gas emissions by at least 20 percent from 2005 levels within five years.