Kevin Martin, director of National Peace Action, on the non-proliferations talks being held at the United Nations. Also, Scientist now have direct evidence that human activity is driving global warming; EPA suppresses a report that states can benefit by 2 billion dollars by reducing mercury pollution, contradicting the Bush administrations claims; Scientists announce they have attained fusion on a table top; National Academy of Sciences releases ethical guidelines on Embryonic Stem Cell research; Is it possible to cure a genetic form of deafness? Scientists isolate responsible gene.