A top industry consultant reveals the 2 key reasons why he thinks US banks are beginning to raise their voices on climate change and sustainability issues

· PwC's US head Tim Ryan said at Davos that he expects American companies to increasingly take climate change as a serious threat over the next year.
· He said that US banks are leading the way in terms of building momentum.
· Ryan attributed this to the banks being excellent assessors of risk, as well as being in a position...