CAIRO - Natural gas is often described as the cleanest fuel, producing less carbon dioxide per joule delivered than either coal or oil.
Natural gas consists primarily of methane (80 per cent) and other hydrocarbon gases in different ratios.
It is (...)
Angola has drawn the attention of the continent by hosting the African Cup of Nations (ACN) for Football in January 2010.
This biannual event has driven hundreds of millions to learn more about the country, its geography, history, resources and (...)