As a child, he had happily played and hiked among these statuesque conifers, which provide shelter to black bears and black-tailed deer. By the age of 37, he wanted to do his bit to conserve and repair the land. But in the six years since he began, California has experienced severe drought, which scientists link to global warming, and 650 of Cody’s 750 seedlings died. Cody’s emotional account of surveying his dying trees struck a chord with thousands of people on social media when it was posted on Earth Day, in April.