While apocalyptic beliefs about the end of the world have, historically, been the subject of religious speculation, they are increasingly common among some of the leading scientists today. This is a worrisome fact, given that science is based not on faith and private revelation, but on observation and empirical evidence… Along these lines, scientists largely agree that human activity has pushed the biosphere into the sixth mass extinction event in the entire 4.5 billion year history of Earth. This appears to be the case even on the most optimistic assumptions about current rates of species extinctions, which may be occurring 10,000 times faster than the normal “background rate” of extinction. Other studies have found that, for example, the global population of wild vertebrates — that is, mammals, birds, reptiles, fish and amphibians — has declined by a staggering 58 percent between 1970 and 2012. The biosphere is wilting in real time, and our own foolish actions are to blame. As for disease, superbugs are a growing concern among researchers…

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