Calculadora de campo - Operações com texto - ArcGis
Construction of a Simplified Wood Gas Generator For Fueling Internal Combustion Engines in a Petroleum Emergency
A speculative peak-oil timeline
Precision Farming techniques in the crop growth cycle. In the past 10 years, Precision Farming has moved from good science to good practice - and has witnessed unprecedented growth around the globe: 70 to 80% of new farm equipment sold today has some form of Precision Farming component inside.
Effect of hybrid cars on oil use (not much!)
New world model
Geologic Maps of the 50 United States
Geology Tattoo Idea - Maybe put a rhodochrosite and aquamarine crystal frame around it ^.^
Renewable energy potential - if we can just harness it...