Look, America is just wasting its time with this fearmongering.
As CO2 emissions continue to head for 1000ppm, we're all (Americans) risking death by 2100 and (Americans) certainly struggling by 2050, with big global impacts (Africa, South America etc.) by 2020 putting a lot of stress on the system (food prices, migration etc.).
The reforms needed are huge, and to have any chance of avoiding catastrophe we must start to act in the next 1-2 years to have any reasonable prospect of stabilizing carbon emissions and then reducing them.
Most Americans don't understand the threat, and keep looking to the Middle East for the next boogie-man.
Well, it's BS. Climate change is going to kill Americans, not terrorists.
My generation might just make it, but boy are my kids going to suffer in a world with climate problems America has largely created for them.
We need to throw everything we have got at climate change, not Iran.
That means cars with 60mpg minimum. No new coal power unless the carbon is captured. Planting lots and lots of trees. Nuclear, solar and wind power. Energy saving installations on homes. And taxing carbon - big time. And it needs to be done quick.
Adpatation is not going to work - the human suffering would be immense. Nor will technology because we have to start the process of carbon reduction now, with the technologies we have now.
This is your warning. But you're all too greedy to listen.
We are poisoning our world with this invisible gas. A deadly invisible blanket.
If the permafrost melts, all bets are off - just start digging (your grave).