Slate: Move over, Al Gore. There's a new wealthy environmentalist whom conservatives love to hate. If you haven't heard of him yet, meet Tom Steyer.
In the past, environmental leaders like Gore have often struggled to deliver a message that resonated: They're too caught up in the stratosphere, living lives of excess that make it easy for critics to cry hypocrisy. Gore, for one, has been much maligned for his use of private jets.
At a Democratic Party fundraising dinner earlier this year, Gore called...