Scientists generally recognize five major extinctions in Earth's history. These were times periods when much of life on Earth became obliterated by things such as oxygen or volcanoes. But now some scientists speculate we're in the midst of a sixth extinction. Not only are we active participants in this epoch... we are the culprits. Check out our infographic by clicking the link in our bio. #infographic #infographics #massextinctions #sixthextinction #volcanoes #climatechange #globalwarming #dinosaurs #extinct #extinctions #environment