This event is another in the series SPA Reviews, organised by Sustainable Population Australia. Professor Stephen Lincoln will take us through his book 'Challenged Earth: A Overview of Humanity's Stewardship of Earth', published by Imperial College Press in 2006. Stephen's work in molecular science has resulted in over 300 publications in scientific journals, as well as awards from UNESCO and the Royal Australian Chemical Institute. Refreshments provided by SPA. Feel free to broadcast this notice, and bring a friend!