My latest on Bloggingheads.tv is up. BHTV wanted someone to interview Aubrey de Grey of the Methuselah Foundation about basic research in antiagathics, and they picked me to do it. It made the interview somewhat difficult, since Aubrey and I already agree about most things, but we managed to soldier on. The interview is mostly Aubrey talking, as it should be.
Persistent ones that accumulate. Mainly viruses. In a lifetime people gradually rack up a load of Persistent Viral Infections - and many of them strike when a person is ill and their immune system is weakened.