"In the jungle, the mighty jungle, the lion sleeps tonight". Yes, the English version of the song dates back to 1961. Even though lions don't live in jungles at all! But then again, "in the savannah" doesn't quite have the same ring to it. Jungles, however, are much older than the 1960s. Forests constantly renew themselves, but some have been growing in the same place for 180 million years. Those places, however, are now under threat. Jungles are being cut down for wood or set on fire for fertile ash. Jungles regulate the climate, clean the air and contain millions of species of plants and animals (not lions, that is). How do we ensure that our jungles survive?