Last night BBC One aired David Attenborough's Charles Darwin and the Tree of Life, which featured a lovely "fly through" the tree of life: In conjunction with the TV show, the Wellcome Trust has launched the Interactive Tree of Life, a Flash-based view of the tree of life. There's also a blog about the project. Here's a demo of the tree: The tree looks very nice, and a lot of work has gone into it, but I am somewhat underwhelmed.