Endocrinology: The study of the medical aspects of hormones, including diseases and conditions associated with hormonal imbalance, damage to the glands that make hormones, or the use of synthetic or natural hormonal drugs. An endocrinologist is a physician who specializes in the management of hormone conditions.
According to IEA (2009) worldwide 1.456 billion people (18% of the world's population) do not have access to electricity, of which 83% live in rural areas. In 1990 around 24 percent of the world's population lacked access to electricity. India was only 43% electrified in 1990 in terms of household access but by 2015 95% of villages had some electric access. In 1979 37% of China's rural population lacked access to electricity entirely. Some 23% of people in East Java, Indonesia, a core region, also lack electricity, as surveyed in 2013.
Today, the world produces as much electricity from nuclear energy as it did from all sources combined in the early years of nuclear power. Civil nuclear power can now boast more than 17,000 reactor years of experience and supplies almost 11.5% of global electricity needs, from reactors in 31 countries.