various background info
- about 5 to 30 times more energy (than contained) have to be invested in the production of food, depending on the type of food (meat: more energy intensive; wheat: best input/output ratio).
[source: http://www.sustainabletable.org/issues/energy/ ]
By 2007, food-related activities were claiming 16 percent of the U.S. energy budget.
over 80 percent of the increase in annual U.S. energy consumption was food related.
Energy consumption by the food-transport sector jumped 24 percent between 1997 and 2002.
[source: http://www.grist.org/article/food-our-energy-gulping-industrial-food-system-in-eight-bullet-points/ ]
Steak (200g): 1000KJ x 20 (production) = 20.000 KJ = 20MJ Gasoline: 35MJ/l --> large steak = 1 liter of Gasoline
[source: wikipedia]
sitting idle: 70 Cal/hour sitting, talking on the phone: 100 Cal/hour walking: 150 Cal/hour jogging: 800 Cal/hour
[source: http://www.dietandfitnesstoday.com/caloriesBurned.php ]
Does a Marathon really make sense?
it’s not healthy, and it really burns a lot of Calories/Energy
~3000Cal per Person per Marathon -->
NYC Marathon (43k runners): 129 million calories; all Marathons (1 year: 1.3mio runners): 3.9 billion calories
1 elementary school lunch: 800 Calories
--> 157.000 / 4.75mio school lunches equivalent
[source: http://www.arrs.net/MaraList.htm (marathon numbers)]