Scientific progress has been described as a series of successful educated guesses followed by a lot of hard work. Here is one of those successful educated guesses (from Science Daily): a researcher has found that a single dose of anti-oxidant nanoparticles quite considerably extends the life of brain cells. This is a very dramatic demonstration of the free radical theory of aging at the cellular level, much more impressive than anything achieved to date. This is very early work of course, but the researchers are already talking about developing therapies for age-related disorders based on these findings. A number of people in the healthy life extension community will be watching this work with great interest.