New Scientist - Why humans grow old grungily:
"Junk plays a central role in many theories of ageing. The 'free radical' theory, for example, suggests that ageing is caused by highly reactive oxygen species that gradually turn DNA and proteins into toxic rubbish. But now there is a new take on junk, where it comes from, and how it causes us to get old. By analysing unusually long-lived variants of the tiny nematode worm Caenorhabditis elegans, David Gems and Josh McElwee of University College London's Centre for Research on Ageing have found that free radicals are just one part of a much bigger story."
Via The Longevity Meme Newsletter
