Burkina Faso . Burkina Faso is therefore a relatively flat country. The country owes its former name of Upper Volta to three rivers which cross it: the Black Volta (or "Mouhoun"), the White Volta ("Nakambé") and the Red Volta ("Nazinon"). The Black Volta is one of the country's only two rivers which flow year-round, the other being the Komoé, which flows to the southwest. The basin of the Niger River also drains 27% of the country's surface. The Niger's tributaries – the Béli, Gorouol, Goudébo, and Dargol – are seasonal streams and flow for only four to six months a year. They
Alessandro Volta between 1776 and 1778, Volta studied the chemistry of gases. He researched and discovered methane after reading a paper by Benjamin Franklin of the United States on "flammable air". In November 1776, he found methane at Lake Maggiore, and by 1778 he managed to isolate methane. He devised experiments such as the ignition of methane by an electric spark in a closed vessel. Volta also studied what we now call electrical capacitance, developing separate means to study both electrical potential ("V" ) and charge ("Q" ), and discovering that for a given object, they are proportional. This is called Volta's