…and the solution is?

The importance of the speed and magnitude of recent population growth in boosting future greenhouse gas emissions is well recognized among scientists… Each birth results not only in the emissions attributable to that person in his or her lifetime, but also the emissions of all his or her descendents. Hence, the emissions savings from intended or planned birth multiply with time…

No human is genuinely “carbon neutral,” especially when all greenhouse gases are figured into the equation. Therefore, everyone is part of the problem, so everyone must be part of the solution in some way.
“Facing a Changing World: Women, Population and Climate,” UN Population Fund, 2009