The Natural History Museum in London is hosting a "multimedia" art exhibition by Lucy and Jorge Orta, who travelled to the Peruvian Amazon rainforest last year to develop their ideas for this exhibition: Amazonia. I have a horrible feeling it's going to be full of ghastly installation thingies, but Perpetual Amazonia (2010) above looks quite presentable. Amazonia opens on 6 October and runs, hops and slithers until 12 December (title link). The price is right: free. And it's a superb museum if the art show is rubbish.