Walker doubles down on opposing Pebble Mine, Alaska

Governor Bill Walker is against the controversial mine and said the mine’s developers have not yet proven to him that the project can be done without harming the Bristol Bay region’s salmon fishery.

Mathematics predicts a sixth mass extinction

MIT scientists have analyzed significant changes in the carbon cycle over the last 540 million years, including the five mass extinction events. They have identified ‘thresholds of catastrophe’ in the carbon cycle that, if exceeded, would lead to an unstable environment, and ultimately, mass extinction.