Why the GOP can't spin Gustav
Gustav is an external event of the sort that happens during campaigns all the time, large and small. One party or the other usually takes advantage of them or benefits from them. But which one, and how is that decided? This is a very interesting piece on how people make their partisan decisions.

Have they found some dark matter?
The world of cosmology is abuzz with rumours that an orbiting observatory called PAMELA has discovered dark matter. Last month, the PAMELA team gave a few selected physicists a sneak preview of their results at a conference in Stockholm.