We think we are, and are supposed to be, enlightened and at least moderately educated to know what we are doing. Not so, our scientists conclude - as we humans drive mass extinction on our planet . "The planet appears to be at the early stages of its sixth mass extinction, and humans are responsible, a new study finds. Published last week in the journal Science, the study incorporates scientific literature review and data analysis by a team of international scientists, led by author Rodolfo Dirzo, a professor of biology at Stanford. Scientists say that the Earth has already sustained five mass species die-offs, the most recent having occurred millions of years ago. But unlike the mass extinction events prior, the one likely underway is caused by human-made climate change and habitat loss. Over 320 vertebrates have gone extinct since 1500, and today, between 16 and 33 percent of vertebrates are endangered or threatened, the study notes. Large vertebrate animals (megafauna), w
Old enough to know better, young enough not to care.