Male humans have about a 10% larger brain than females. A study of 46 adults aged 22-49 years found an average brain volume of 1273.6cc for men, ranging from 1052.9 to 1498.5cc, and 1131.1cc for women, ranging from 974.9 to 1398.1cc.
World distribution of hydropower. 1  Hydropower is the most important and widely-used renewable source of energy. 2  Hydropower represents about 16% (International Energy Agency) of total electricity production. 3  China is the largest producer of hydroelectricity, followed by Canada, Brazil, and the United States (Source: Energy Information Administration).
Canada is the world's second largest producer of hydroelectricity after China which is more than double Canada's level. and one of few countries to generate the majority of its electricity from hydroelectricity (59% in 2006).