A Setup

I think Kevin Drum set up his readers with this post regarding a solution to global warming, caused by decomposing agricultural waste:

Take advantage of that. The leftover corn cobs and stalks from our fields can be gathered up, floated down the Mississippi, and dropped into the ocean, sequestering it. Below about a kilometer depth, beneath a layer called the thermocline, nothing gets mixed back into the air for a thousand years or more. It's not a forever solution, but it would buy us and our descendents time to find such answers. And it is inexpensive; cost matters.

The catch, as succintly revealed in the comments:

corn cobs float

Don't ever ask Kevin to dispose of the bodies. Ask a Republican instead. They would know enough to make sure to tie little lead weights to each of the cobs.