An interview published last year in the BulletinofAtomicScientists detailed how at age 88, he was working on a new approach to photovoltaic thin-film production that he said would allow factories to make enough solar panels in a year to produce at least one gigawatt of electricity annually roughly the scale of a nuclear power plant at the price of coal.
Over at the Bulletinof the AtomicScientists, Pavel Podvig has a very interesting post about the mythology of missile defense and how it has wrongly been credited with ending the Cold War.