Bay Area researchers are using a particular cancer to produce neuronlike cells that, when injected into the brain, seem to reverse the effects of stroke. Is the treatment a historic medical breakthrough, or a reckless ploy to attract investors?
The Western Pacific gray whale, once thought extinct, clings to life in a remote Siberian sea. Biologists fear their research is serving as cover for massive oil drilling that could wipe out this lost tribe once and for all.
Mayor Willie Brown has made official decisions benefiting business entities that are partners in the mayor's own private business endeavors. Is this intersection of Brown's public decisions and private finances a coincidence - or a conflict of interest?