With easy access to oil unlikely to last much longer, ethanol has the potential to replace a significant part of the world's petroleum-based fuels, says a leader of the push for energy sustainability in Brazil. But José Goldemberg, a physicist at the University of São Paulo, told a 27 June seminar at AAAS that there is considerable "hype" surrounding the recent popularity of ethanol
Physicist José Goldemberg Discusses Ethanol and Brazil's Short-Lived Nuclear Weapons Program 
