For the two largest donations above $100, we'd like to say a special thank you by sending you one signed copy of each of Tim Flannery's 'Here on Earth' and Roger Martin's 'Tree kangaroos of Australia and New Guinea'. We won't make public what these donation amounts ('the bidding') are, as we thought it'd be more fun that way! So if you want to be in the running for these amazing and very valuable books, please consider donating now.