Humans Have Exceeded Six of the Nine Boundaries Keeping Earth Habitable

The Earth is now well outside the safe operating space for humanity. That's according to scientists who've found six out of nine "planetary boundaries" have now been broken because of human-caused pollution and destruction of the natural world. Professor Katherine Richardson, one of the scientists who helped create the Planetary Boundaries Framework, tells The World the findings show "we need to manage our relationship with the natural environment".