A team of researchers has demonstrated how plants harness toxic molecules called reactive oxygen species for the signaling pathway that helps to grow roots. These reactive oxygen species aren’t just toxic chemicals but they serve critical roles as regulators of a developmental process. The researchers proved that cells get some of the information they require from substances that are usually considered harmful. Researchers believe classifying the complex molecular interactions that control root growth could pave the way for more productive crops with roots optimized for various soil varieties.