The Seed Buried Deep offers a unique insight into his incredible expedition. The RRP is £12, and both books are currently available for £10 on amazon http://www.amazon.co.uk/Seed-Buried-Deep-Expedition-Trilogy/dp/0984915516 and you can also check out this short film featuring Jason’s adventure on the BBC: http://www.bbc.co.uk/news/magazine-21377623