The highest resolution forest loss map to date is today published in the journal Science. The global map includes deforestation across the world including Guyana since 2000, at a resolution of 30m. The collaboration between the University of Maryland, NASA and Google Inc is the first of its kind, and the data will be freely available from January 2014.
See the interactive map here: http://earthenginepartners.appspot.com/science-2013-global-forest
Source: Hansen, M.C., Potapov, P.V., Moore, R., Hancher, M., Turubanova, S.A., Tyukavina, A., Thau, D., Stehman, S.V., Goetz, S.J., Loveland, T.R., Kommareddy, A., Egorov, A., Chini, L., Justice, C.O. & Townshend, J.R.G. (2013) High-resolution global maps of 21st-century forest cover change. Science, 342, 850-853.