Just when you think you have an enemy down it jumps back up and bites you. Apparently urbanization is resulting in (less productive) small-scale agricultural land turning back to jungle or “rain forests” as the hippies call it. Sorry, it is a NYT link.
The threat is clear. Soon all of humanity will be surrounded by merciless massive trees, kept awake by howler monkeys and beset by harpy eagles. If we don’t napalm these jungles soon we could be doomed.