There are many issues that need to be resolved in order for our survival on this planet to be sustainable over the long run. Some of the major issues are food production, energy production, and waste disposal. One idea being pursued by some is the idea of intentional communities which are self-sufficient and live directly… (read more)

Can anyone point me to reliable data regarding the amount of land required for food production for a human being using various methods and with various diets, modern agriculture verses more natural methods, western diets verses less meat intensive diets verses vegetarian diets, etc? Thank you.

In the past I posted an idea regarding a possible way to scale up a device called a “fusor”, a small hydrogen fusion reactor that uses electrostatic forces to accelerate deuterium ions towards the center of the device where a portion of them collide with sufficient energy to fuse releasing neutrons, helium, and energy. These… (read more)

A lot of hype has been given lately to ultra capacitors. They are a new type of capacitor that can theoretically achieve energy densities similar to or even surpassing lithium ion batteries. The creators of these capacitors hope to replace chemical batteries in everything from laptops to cellphones to electric vehicles. Electric vehicles in particular… (read more)