When Joan Baez recorded that song, the fear was that the testing of nuclear weapons was releasing so much radioactivity into the atmosphere that living things (including humans) would be adversely affected. We don’t yet know, of course, the degree to which living things might have been (or are being) influenced by the radioactivity, but—so far, at least—we haven’t had any major biological disasters (that we know of). The current fears about the climate are based primarily on what has been global climate change” or Global Warming And it certainly seems as though our climate has been . . . → Read More: What Have We Done to the Rain?