Level of use of external energy sources differs across societies, along with the convenience, levels of traffic congestion, pollution sources and availability of domestic energy sources. (sciencedaily.com)
In the 1960s, the Belgian physicist Ilya Prigogine made progress on predicting the behavior of open systems weakly driven by external energy sources (for which he won the 1977 Nobel Prize in chemistry). (scientificamerican.com)
Participants, including representatives from Korea and India, agreed that Asia's increasing role on the world energy scene and increasing dependence on external energy sources carry significant implications for energy security, not only in the region, but the world. (iea.org)