New research done at the University of the Witwatersrand in Johannesburg, South Africa, and Huazhang University of Science and Technology in Wuhan, China, has exciting implications for secure data transfer across optical ...
Quantum Physics
11 hours ago
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296
Billions of locusts swarming through East Africa are the result of extreme weather swings and could prove catastrophic for a region still reeling from drought and deadly floods, experts said Friday.
Environment
14 hours ago
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16
Shark attacks were unusually low for the second year running, with 64 unprovoked bites in 2019, according to the University of Florida's International Shark Attack File. The total was roughly in line with 2018's 62 bites ...
Plants & Animals
Jan 23, 2020
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4
Loggerhead turtles feed in the same places year after year—meaning key locations should be protected, researchers say.
Plants & Animals
Jan 23, 2020
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30
Lisa Kewley has transformed our understanding of the early years of the Universe, the development of galaxies, and what happens when they collide.
Astronomy
Jan 22, 2020
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221
A team of international researchers, which includes a Saint Louis University Madrid anthropologist, dug deep to find some of the oldest African DNA on record, in a new study published in Nature.
Archaeology & Fossils
Jan 22, 2020
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There is growing interest in the creative economy in emerging markets in terms of its impact on employment and economic growth, as well as social and cultural impacts.
Economics & Business
Jan 21, 2020
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2
In 2017, when the drought in Cape Town was at its worst in over a century, aid organisation Gift of the Givers made an urgent call to South Africans to help farmers; suicide rates, amongst both small- and large-scale farmers, ...
Environment
Jan 17, 2020
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In the north eastern Free State, a 60 km green corridor is being created that will link the upper Wilge Protected Environment to the Sneeuwberg.
Ecology
Jan 17, 2020
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The man in the tattered shirt, biceps bulging as he pulls an enormous bag of waste behind him on a trolley. The blaring horns as cars slide by, annoyed at the intrusion in their lane. The furtive WhatsApp messages on community ...
Environment
Jan 17, 2020
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23
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
