Diseases, Conditions, Syndromes

Ebola's economic effects

While the world's media may well have moved on to new stories, the 2014 Ebola outbreak in West Africa, which was one of the most devastating in history, continues to have a significant impact on the lives of those affected ...

Psychology & Psychiatry

Study links low language ability and poor mental health

One of the first studies of its kind focusing on South African children's language ability and mental health outcomes, has found clear evidence for a link between low language ability and depression in young people.

Diseases, Conditions, Syndromes

Previous major Ebola outbreaks

The death toll from the latest Ebola epidemic in the Democratic Republic of Congo (DRC) crossed 2,000 on Friday, making it the second worst ever outbreak of the disease.

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Africa

Africa is the world's second-largest and second most-populous continent, after Asia. At about 30.2 million km² (11.7 million sq mi) including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area. With a billion people (as of 2009, see table) in 61 territories, it accounts for about 14.8% of the World's human population. The continent is surrounded by the Mediterranean Sea to the north, the Suez Canal and the Red Sea to the northeast, the Indian Ocean to the southeast, and the Atlantic Ocean to the west. Not counting the disputed territory of Western Sahara, there are 53 countries, including Madagascar and various island groups, associated with the continent.

Africa, particularly central eastern Africa, is widely regarded within the scientific community to be the origin of humans and the Hominidae tree (great apes), as evidenced by the discovery of the earliest hominids and their ancestors, as well as later ones that have been dated to around seven million years ago – including Sahelanthropus tchadensis, Australopithecus africanus, A. afarensis, Homo erectus, H. habilis and H. ergaster – with the earliest Homo sapiens (human) found in Ethiopia being dated to ca. 200,000 years ago.

Africa straddles the equator and encompasses numerous climate areas; it is the only continent to stretch from the northern temperate to southern temperate zones.

This text uses material from Wikipedia, licensed under CC BY-SA