Christian Science Monitor: It`s tough slogging these days for people interested in capturing greenhouse-gas emissions at the source and burying them in deep rock formations, or, short of that, figuring out how to suck CO2 out of the atmosphere once it gets there. What to do while research continues on the feasibility (or infeasibility) of these approaches and the world still struggles to reduce emission in the first place? Bundle up crop residue — straw, corn stalks, and their ilk — and heave it overboard in …