Piling on to the already ugly burden of science fiction needing to be written. This one is called "Project Black Death 2 : Better Living Through Applied Bubonics".
The story according to the Illuminati conspiracy ideas is that the solution to the environmental crisis is radical population controls in the form of designer plagues. Best advice we could offer would be to just avoid earth entirely for the next foreseeable future.
If this is infeasible for you due to underdeveloped powers of personal trans-dimensional teleportation, at least stay very close to the ones you love is all I can say and make each day the best it can be. Love is all that counts when all has been said and done. Go make some, give some, get some, be some.