Power Down: Options and Actions for a Post-Carbon World (ISBN 978-0865715103) is a 2004 book by Richard Heinberg in which Heinberg discusses peak oil and its attendant implications for the global economy. Due to the dependence of industrialized society on cheap and readily available petroleum (fossil fuel oil), Heinberg argues that the post-peak period of global history is likely to be characterized by social and economic turmoil, disruption of trade, declining standard of living, and warfare.