[tdwg-phylo] phylogenetic tree data

Hi,

I was just wondering, is it possible to obtain, somewhere from the net, the full phylogenetic tree for life on earth?

How big would the data be? How many nodes are there (counting a species, and every split in the graph, as a node)?

I'm thinking of fitting it inside the interatctorium (www.interactorium.net)

Cheers