| There is an ever increasing demand of sources of | | | | emissions; the fuel production at the expense of food |
| energy, in particular oil, coal and gas fuels. | | | | could worsen hunger worldwide. Farmers in the US |
| The oil supply has recently climbed up to | | | | have planted maize and corn in magnanimous |
| unprecedented levels and its prices increased. | | | | quantities, as a derive to increase bio-ethanol |
| This is coupled with the fouling of the earth's | | | | production, which inherently have increased its prices |
| atmosphere with the continuous evolution of carbon | | | | as human and animal food source. |
| dioxide, nitric oxide and other noxious gases, which | | | | The South American countries, particularly Cuba use |
| inevitably lead to global warming and catastrophic | | | | bio-ethanol produced from sugar cane as a mobile |
| climate change. | | | | energy source, though this did not solve the problem of |
| Coal is said to have a comeback, more so in Asia | | | | the feeding urban population, nor did it decease the |
| domain as China. Though this might not solve the | | | | price of food commodities. |
| problem of evolution of CO2, the main source of global | | | | A recent attempt implemented in Papua New Guinea |
| warming. There have been some attempts to have | | | | as the use of coca nut oil squeezed off from the |
| power plants using what is so called "clean coal", i.e. | | | | kernels of the fruit, was used as a bio-fuel instead of |
| release less carbon dioxide in the atmosphere, but that | | | | diesel oil for tractors and other heavy vehicles. It was |
| won't be available for years to come. The problem is | | | | of a slow burn however, and cannot initiate proper |
| also tackled in another way by attempts to sequester | | | | drag, unless blended with diesel. |
| CO2 in deep crevices in the earth crust between | | | | The world demand for food has been spiraling, partly |
| impervious rock deposits. But again this may gain fruit | | | | because of the increase in world's population and |
| in few years to come. | | | | industrialization in making more of those people |
| Hence the feverish and serious seek for other | | | | prosperous enough to eat better, and more, which |
| alternatives as a source of clean energy bio-fuels, | | | | takes a lot of grain and cereals to produce. The irony |
| solar and wind drives. | | | | here is that the increase in the agricultural research |
| The main alternative to coal and oil sources is to use | | | | and development produced unprecedented crop yields |
| bio-fuels from crops such as bio-ethanol. This | | | | in the late 20th century, counterbalanced with the big |
| provoked a boom in planting; but the burning of the | | | | population growth, whence hunger prevailed and will |
| bio-fuel may not even decrease the greenhouse gas | | | | continue to bite. |