Scientists work to solve phosphate shortage -- the dwindling resource required to grow food - The Conversation US

Global phosphate production is set to peak in 2030, around the same time the world's population will reach nine billion. As a finite resource, a phosphate shortage will effect global food production.
https://theconversation.com/scientists-work-to-solve-phosphate-shortage-the-dwindling-resource-required-to-grow-food-120390