The general problem with attempting to profit from global warming is that you end up having to short the entire financial system, and it's tough to make money from the idea of "everything stops working".
Realistically, both Canada and Russia are countries likely to be net beneficiaries of global warming. Taxes won't have to be increased as much to deal with the effects; more taxes will be generated from increased agricultural productivity; and heating costs will decrease. Must be some way to hedge your personal losses from global warming with investments there.
