Step one: determine whether humanity actually has any visible effect on global warming. Climatologists tend to make errors not only in scale, but in direction of processes. For example they fail to account for heat of fusion of water, which is enormous and can cause the environment gain in temperature when water freezes.
> Cutting emissions will cost us — but so will global warming
Spending plenty of resources for limiting CO_2 emission while it was the Sun what is making the climate warmer would be doubly stupid. It would be triple times stupid if the Earth was loosing heat instead of gaining, and we still can't tell which way it is. Note that temperature rising does not implicate we have more heat (see water supercooling).
> Cutting emissions will cost us — but so will global warming
Spending plenty of resources for limiting CO_2 emission while it was the Sun what is making the climate warmer would be doubly stupid. It would be triple times stupid if the Earth was loosing heat instead of gaining, and we still can't tell which way it is. Note that temperature rising does not implicate we have more heat (see water supercooling).