Causes of climate change are both natural as well as man made. As contribution of man is very high in magnitude today, solutions are possible only by human efforts. But be very sure, only scientists can do nothing. Contribution of every section of society is essential
Modellers of climate change suggest a reduction of greenhouse gas emissions to stablize the change would need 80 to 90% emission reduction and at least several decades for the new equilibrium to stabilize. Check out work of Dr. James Hansen. While it is certainly possible to reduce emissions sources the ability to use sequestration has not been implemented.
No till agriculture can be a part of this ability to utilize sequestration with Rattan Lal suggesting about 10% of the overenrichment would be neutralized by all tillable land adopting no till agriculture. If we accept that analysis the 330 kg/ha C per year Puget and Lal for no till adoption. This no till potential is smaller than the use of green cover cropping with can be about 3 times that and compost utilization 6 times that and biochar 12 times that and the use of integrated animal and crop systems over 25 times that. Agroforestry would be another big potential mitigator.
The bottomline is that there is a huge potential to combine sequestration with reduction of emissions to resolve these issues. The implementation of agriculture centered sequestration strategy will have a beneficial side effect of mitigating the impacts of drought issues through the positive impact of soil organic matter increases and in addition a better ability for plants to defend against diseases and pests and finally the improvement of the value of food and feed content from the improved soil resources. Finally the improvement in soil organic matter improves issues related to soil quality and losses of nutrients from current agricultural systems.