When Kris Famm was 15, he became obsessed with photosynthesis. He lived with his parents and older brother, Fredrik, on a farm not far from the Baltic coast in southeastern Sweden, in an expanse of gentle hills threaded with forests of birch and spruce. It was a paradise for two energetic boys, and they spent most of their free time outside, often with their grandfather. Leading Kris and Fredrik on long hikes through the woods, he taught them about trees and wildlife and the richness of the land, which he was the last in the family to till.
