English: A schematic showing the (fragmented) world forests in 2000 BC, and the additional forests in 6000 BC (which have been lost since then). The schematic was made based on http://maps.howstuffworks.com/world-forest-cover-map.htm which is itself a simplified map of World Resources Institute, Forest Frontiers Initiative, 1998 (see http://pdf.wri.org/lastfrontierforests.pdf ) The schematic was drawn from scratch with the GIMP on a map from wikimedia commons An additional reference on the fragmentation and general size of the leftover forests can be found at http://www.intactforests.org/world.map.html Note that due to the Flexible Mechanisms scheme under the Kyoto protocol, it would be possible to replant the amount of forests that were present atleast a few hundred years ago at an economically rewarding fashion. For this action (which btw could be accomplished in under 30 years, see http://environment.guardian.co.uk/conservation/story/0,,1947182,00.html), the map is useful as it shows the location of where forests would grow easily, and it is also useful as a rough indication as the amount of forests in 6000 BC would not have differed greatly from the amount of forests in say 1900 DC (most forests have been destroyed in the last 100-ish years)