Researchers have developed an artificial intelligence model that can predict, before anything goes into the ground, whether biochar, a charcoal-like material made by burning plant waste, will boost phosphorus availability for crops or hold it back to prevent waterway pollution. The study, led by Yutao Peng of Sun Yat-Sen University in Shenzhen, drew on 534 measurements from 32 earlier studies and ran them through three machine learning systems.