Miles Ryan checked his harness one last time, gave an assured look to his ground crew, and started to climb. …There, balanced at the top of the forest, Ryan leaned out toward the tips of the limbs to get what he’d come for: cones. It was one of Cal Fire’s last cone samplings of the season, which usually runs from August to October across state forests and conifer species. Each cone contains anywhere from a few dozen to hundreds of precious seeds. These have become more important in recent years, as an uptick in severe wildfires and the spread of insects and diseases have led to mass deaths of pines across California forests. But there are just a few dozen professional tree climbers like Ryan trained for high-elevation seed collection in California. …Cal Fire needs to collect 55,978 bushels of cones across species and locales to fully stock its seed bank.