In northwestern Costa Rica, the forest did not return all at once. First the cattle were removed. Then the fires had to be stopped. Introduced grasses made the old ranchlands burn too easily. Fence lines had to be watched. Seeds had to arrive by wind, birds, bats, and the stomachs of passing animals. People had […]

In northwestern Costa Rica, the forest did not return all at once. First the cattle were removed. Then the fires had to be stopped. Introduced grasses made the old ranchlands burn…

Daniel H. Janzen is a biologist whose career has blurred the traditional boundaries between field ecology, evolutionary science and conservation.