Brown2020

The book Eating Fossil Fuels looks at agriculture and our food supply through the lens of energy and energy balance. When you add up the energy inputs of fertilizer, pesticide, herbicide, irrigation, and tilling, the food produced on a typical acre of land today takes many more calories of energy to produce than the maximum energy that could possibly be generated from the sun through photosynthesis. Where does the extra energy come from? Mostly from fossil fuels. What does this mean? The current food system is unsustainable and in many more ways than most people realize. If you look at the energy content of the food we eat, we are literally eating fossil fuels.

Mother Jones recently published this is a fabulous picture of where greenhouse gases really come from. It is particularly interesting to see that when you add up the impact of deforestation, fertilizers, and methane, our taste for beef may have a bigger carbon footprint than our need for transportation.

At TEDGlobal 2007, William Kamkwamba showed us how necessity is the mother of invention, making a windmill out of simple scrap materials to power his home in Malawi. Without any money, but armed with a book from the library and some ingenuity, this teenager from a rural village in Malawi gave a fitting answer to an earlier speaker’s opinion that renewable energy is “too expensive” for developing countries.