Even if they choose not to believe it, most people have by now heard scientists’ warnings that we’re pushing the planet’s climate and biodiversity beyond their limits. What many might not realise, however, is that the Earth’s phosphorus cycle could also be in danger of reaching a

Next week, a US university will unveil a new initiative aimed at addressing the “biggest problem you’ve never heard of”: peak phosphorus. James Elser, an Arizona State University (ASU) ecologist who’s one of the researchers helping to launch the Sustainable Phosphorus Initiative on Earth Day (April 22), warns