Aboriginal people, not environmentalists, are our best bet for protecting the planet

Using DNA to track the movement of people in the past, scientists suggest our species evolved some 150,000 years ago on the plains of Africa. That was our habitat, but unlike most other animals, we were creative and used our brains to find ways to exploit our surroundings. We were far less impressive in numbers, size, speed, strength or sensory abilities than many others sharing our territory, but it was our brains that compensated.

Over time, our numbers increased and we moved in search of more and new resources (and probably to check out the Neanderthals with whom we crossbred before they went extinct). When we moved into new territories, we were an alien creature, just like the introduced ones that trouble us today.

George Monbiot of The Guardian makes the point that we can trace the movement of our species by a wave of extinction of the big, slow-moving, dim-witted creatures that we could outwit with even the simplest of implements like clubs, pits, and spears.