Websites

The collection of numerous websites help one to gain a better understanding of our interactions on the planet.

Sustainability (extracting resources at a rate no higher than the production of resources) is key to maintaining the balance of people and the planet. The amount of nutrients needed to produce one unit of food is an excellent metric to determine sustainability. See: www.natgeofood.com

Which animal is most efficient in providing people with food: cattle, fish, chicken, hogs?