The latest sign that climate change is gaining currency on Wall Street? Morgan Stanley vice chairman Jon Anda has left the bulge-bracket firm to start a new emissions-trading advocacy effort. Anda, 49, joined venerable New York­ based green group Environmental Defense last month to become president of the Environmental Markets Network. There he will recruit banking and finance gurus into a coalition pushing for a U.S. program to cap carbon emissions and to trade emissions credits. The group's aim is to make such a program more palatable to Congress by advising it on how an emissions-trading market might be structured, specifically looking at how to handle derivatives, lending and clearing. "These are things that people on Wall Street are good at," says Anda.