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- World acres - 123 billion acres in size, of which 37 billion acres are land. Of this, 1.5% is urban area. Read Who Owns the World.
- Global farmland is approximately 19 million square miles, or approximately 12 billion acres.
- 40.8% of USA land is farmland - , or 911 million acres - 
- For 30,000 OSE Campuses at 1000 acres each, that is an intended total of 30 million acres, or 3% of US farmland.
- US farmers lose an average of $60/acre before subsidies, and make $20/acre after subsidies - 
- It costs 10 cents in feed per laying chicken per day assuming no foraging - . There is an added cost of 22 weeks until laying age.
- Max current genetics of hazel crop - 3000 lb/acre dry kernel + 5000 lb shell (fuel) - 49:48 of  - 10 lb/plant
- Average USA corn crop - 8000 lb - 
- Average USA soybean crop - 2700 lb - 
- USA average soil erosion is 5 tons per acre for agricultural land - 
- Approximately 10 million acres of cropland are lost every year due to erosion (a square more than 100 miles on the side), or 4- 
- 36 billion acres of land on earth - 
- total biomass yield of USA provides almost 2x the USA use of gasoline equivalent from biomass to gasoline and fuel char for gasifier engine - https://www.soils.org/files/am/ecosystems/kinght.pdf
- total land and sea area to cover food needs per person - 1.7 acres.http://www.footprintnetwork.org/pt/index.php/GFN/page/living_planet_report_2014_facts/
- arable land usa - .5 ha/person
- World Military Spending - $1.7T
- US GDP - $17T, and Government Budget- $7T
- World GDP - or GWP - $85T
- World energy use - 144 PWhr
- USA Military Spending - $640B - $2k per capita spending
- USA Trillion Military Budget - 
- $40B organics market - http://www.ers.usda.gov/topics/natural-resources-environment/organic-agriculture/organic-market-overview.aspx. That makes it
- Annual sustainable forest yield of 12.5B cubic meters or 105 exajoules - , p. 615
- Annual energy use by USA - 94 exajoules
- US energy consumption by sector - 40% electricity, 30% transportation - 
- 250GW of PV is installable on existing rooftops - Cosservative estimate (50% of residential rooftops) - 
- Per year, let's take average insolation as 6 hours per day * 365 days - or 550 TWhr per year. That is 2% of USA's energy use, or 5% of USA's electric use. This is JUST RESIDENTIAL ROOFTOPS. Needs to add commercial rooftops, parking lots, roadway medians.
- USA road density - 67 km/ 100 sq km of area - 
- USA area - 10 million sq km
- USA roads - 6.7 million km. Assume an average road is 2 lane with shoulder - each lane has 12 foot (3.7m) standard in the USA -  - or an area of about 100,000 sq km. This could power 1/4 of the world's energy needs (oil, nukes, solar)
- Area required to power all of the world with PV is 400,000 sq km - 
- Total forest area of the world - 4 billion hectares -  - 30% of land area of world.
- Total farmland area worldwide -
- Total land area - 150M sq km - google
- Total agriculture land - 33% of world land according to FAO - 
- Energy per capita US vs Switzerland - As an indicator, the average energy use per person is 12,000 watts in the USA but only 3,000 in the Switzerland - 
- Percentage of USA energy by source. Coal electricity is 40% - 
- Half of USA rooftops could replace all coal electricity in the USA - 
- World electricity production 2009 - 20PWh - 
- Area of all cities compared to world land area - 0.5% -  - or 750,000 sq km.
- Average driving distance - 13.5k miles/yr - USA - 
- Average commute, USA - 14 miles - 
- Tesla Model S battery - $12k for 10 years of service - 
- This source says 5 years of service - 
- Given $1200/year battery costs of Tesla Model S, cost of fuel or electricity is $1700 - no savings - between the electric and regular fuel option approximately at the 15,000 mile per year mark - according to cost calculator at 
- Lithium Ion batteries - predicted to go down to under $200/kWh -
- Nickel-Iron battery energy density - 50Wh/kg - 
- Lithium reserves - 13 million tons worldwide - 
- One study shows there are supplies for EVs until 2100 (about a 100 year supply)
- EVs could replace 75% of petroleum fuel - 
- Materials cost for a 18650 cell (Lithium Ion) is $1.25 (about 4W) - 
- Lithium is $40/lb - 
- According to this source -  - we have 100 years of nickel reserves, nad 200 years of iron and aluminum.
- Nickel - $6/lb
- Iron - 20 cents/lb
- Sustainable Energy Without the Hot Air - 
- Paper on Lithium Ion vs. fuel cars - LCA - using E199 and Total Beauty frameworks. We can make a case for a much higher Total Beauty Framework using renewable fuel (charcoal) - 
- Study E199 and Total Beauty
- Embodied energy of common products -