If we look at what is happening in the world today, you might start to ask the question: How did we manage to become so many and what changed?
In a study done by Giampietro and Pimentel, they found out that 10 kcal of exosomatic energy are needed to produce 1 kcal of food. This figure already takes into consideration packaging and delivery costs. It does not, however, include household cooking.
It is estimated that the U.S. food system uses ten times more energy than its capacity to produce food energy. And this inequality is possible because of our use of non renewable fossil fuel stocks. In short, one calorie of food we eat is manufactured by using 10 calories of oil but we have enough energy source to sustain this. And this is the reason why our population is growing in leaps and bounds.
Today, we are probably on the verge of discovering another source of energy. The Cold Fusion Devices invented by Andrea Rossi is now in its final stages of launching to the public. This will have major consequences in our world. The fact is if we never found safe nuclear energy, the business as usual scenario of the limits to growth team would play out. Now, what would transpire if we have Cold Fusion Devices, which would produce abundant amounts of energy?
One consequence of this scenario is that it will be possible to extract phosphorus from the ocean. Due to its place in the Adenosine triphosphate (ATP) helix, phosphorus is one of the limiting factors. It is also an energy carrier of all living things. What happens now is that our phophate deposits are depleted and lower grades of metal need more energy to remove the other stuff. Will the Cold Fusion Devices make phosphorous readily available to us?