Plants amazingly dominate this green world by employing poisons, recruiting defensive armies, feeding off the dead and using animals for pollination and seed dispersal. For predators this world presents exceptional challenges, not only in finding prey in such a tangled place, but in how to deal with the toxins that so many animals and plants are laced with. Over the millenia, rains have come and gone, rivers have snaked and weaved, an infinite number of trees have grown and fallen, while grasslands have been swallowed and reborn. With every change, there has been a new opportunity for a vibrant life, from gentle forest elephants to tiny multicoloured killifish. The green heart of Africa is a bubbling cauldron of evolution, a giant experiment with life.