Read at :
http://www.sciencedaily.com/releases/2011/08/110803083502.htm
Breeding Crops With Deeper Roots Could ‘Slash CO2 Levels’
ScienceDaily (Aug. 3, 2011) — Breeding crops with roots a metre deeper in the ground could lower atmospheric CO2 levels dramatically, with significant environmental benefits, according to research by a leading University of Manchester scientist.
