News tagged with africa

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Stunting remains a challenge in South Africa

Stunting remains stubbornly persistent in South Africa, despite economic growth, political and social transitions, and national nutritional programmes, says a Wits-led research team.

Jul 01, 2015
popularity 6 comments 0

Mobilising against hypertension in South Africa

Lifestyle-related disease is on the rise in South Africa, including high blood pressure. An ingenious partnership involving Oxford University is putting the nation's extensive mobile phone network to work ...

May 27, 2015
popularity 10 comments 1

Tackling child abuse in Africa with research and fun

In one of South Africa's poorest areas, an imaginative new parenting programme is tackling the physical and emotional abuse of children. Oxford University's Vice-Chancellor, Professor Andrew Hamilton, travelled ...

May 26, 2015
popularity 28 comments 0

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