For a topic outline on this subject, see List of basic Africa topics.
Africa is the world's second largest and second most-populous continent, being behind Asia in both categories. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area. With
1.2 billion people as of 2016, it accounts for about 16% of the world's human population. The continent is surrounded by the Mediterranean Sea to the north, the Isthmus of Suez and the Red Sea to the northeast, the Indian Ocean to the southeast and the Atlantic Ocean to the west. The continent includes Madagascar and various archipelagos. It contains 54 fully recognised sovereign states (countries), nine territories and two de facto independent states with limited or no recognition. The majority of the continent and its countries are in the Northern Hemisphere, with a substantial portion and number of countries in the Southern Hemisphere.
Africa's average population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Algeria is Africa's largest country by area, and Nigeria is its largest by population. Africa, particularly central Eastern Africa, is widely accepted as the place of origin of humans and the Hominidae clade (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 7 million years ago, including Sahelanthropus tchadensis, Australopithecus africanus, A. afarensis, Homo erectus, H. habilis and H. ergaster—the earliest Homo sapiens (modern human), found in Ethiopia, date to circa 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.
Africa hosts a large diversity of ethnicities, cultures and languages. In the late 19th century, European countries colonised almost all of Africa; most present states in Africa emerged from a process of decolonisation in the 20th century. African nations cooperate through the establishment of the African Union, which is headquartered in Addis Ababa.
The hippopotamus (Hippopotamus amphibius) is a large, mostly plant-eating African mammal, one of only two extant species in the family Hippopotamidae (the other being the Pygmy Hippopotamus).
The hippopotamus is a semi-aquatic mammal, inhabiting rivers and lakes in sub-Saharan Africa in large groups of up to 40 hippos. During the day they remain cool by staying in the water or mud; reproduction and childbirth both occur in water, where territorial bulls preside over a stretch of river. While hippos rest near each other in territories in the water, grazing is a solitary activity and hippos are not territorial on land.
Despite their physical resemblance to pigs and other terrestrial even-toed ungulates, their closest living relatives are cetaceans—whales, porpoises and the like. The common ancestor of whales and hippos split from other even-toed ungulates around 60 mya. The earliest known hippopotamus fossils, belonging to the Kenyapotamus in Africa, date to around 16 mya.
Although there are an estimated 125,000 to 150,000 hippos throughout Sub-Saharan Africa, they are still threatened by poaching and habitat loss.
Photo credit: schani
The cheetah (Acinonyx jubatus) is an endangered member of the cat family (Felidae), a poor climber that hunts by speed and stealth. It is the fastest of all land animals and can reach speeds of more than 105 kilometres per hour (65 mph) in short bursts up to 460 metres (500 yd), as well as being able to accelerate from 0 to 110 kilometres per hour (68 mph) in three seconds. The word "cheetah" is derived from the Sanskrit word citrakāyaḥ चित्रकायः meaning "variegated body", via the Hindi cītā चीता.
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Ahmose I (sometimes written Amosis I and meaning The Moon is Born) was a pharaoh of ancient Egypt and the founder of the Eighteenth dynasty. He was a member of the Theban royal house, the son of pharaoh Tao II Seqenenre and brother of the last pharaoh of the Seventeenth dynasty, King Kamose. When he was seven his father was killed, and when he was about ten his brother died of unknown causes, after reigning only three years. Ahmose I assumed the throne after the death of his brother, and upon coronation became known as Neb-pehty-re (The Lord of Strength is Re).
During his reign he completed the conquest and expulsion of the Hyksos from the delta region, restored Theban rule over the whole of Egypt and successfully reasserted Egyptian power in its formerly subject territories of Nubia and Canaan. Ahmose's reign, usually dated to about 1550–1525 BC, laid the foundations for the New Kingdom, under which Egyptian power reached its peak.
Topics in Africa