Ceres: The Fountain of Life?

I missed this one. Both Paul McAuley (at Earth and Other Unlikely Worlds) and Adam Korbitz (at Estimate of the Solution) talk about the possibility that life here (on Earth) came from the large asteroid Ceres.

Something for Dawn to contemplate as it visits. And we can continue to contemplate why Mr. McAuley's books aren't more widely distributed (say, in the United States).