Africa是什么意思？

Between now and 2050, the urban population of Africa could triple.

But while height has increased around the world, the trend in many countries of north and sub-Saharan Africa causes concern, says Riboli.

lions have disappeared from much of Africa, but for the past few years scientists have wondered if the big cats were hanging on in remote parts of Sudan and Ethiopia.

Most of Africa is urbanising at a lower level of income than other regions of the world did.

They can lead to extreme rain in parts of North and South America, even as southern Africa experiences dry weather.

with the exception of South Africa, the only light rail metro system in sub-Saharan Africa is in Addis Ababa, Ethiopia.

Yet cities in sub-Saharan Africa are not getting richer the way cities in the rest of the world have.

The scientists tracked white storks from different colonies in Europe and Africa.

The Russian, Greek and Polish storks flew as far as South Africa, while those from Spain, Tunisia and Germany flew only as far as the Sahel.

For example, the United Nations Children's Fund estimates that some 11 million children in Africa face hunger, disease, and water shortages as a result of the strongest El Ni o ( ' , 厄尔尼诺) weather phenomenon in decades.

Even Africa and the Middle East, home to economies that are heavily dependent on fossil fuel exports, have enormous potential to develop renewables.

And the World Resources Institute ( ' , WRI) in its World Resources 2005 report, issued at the end of August, produced several such examples from Africa and Asia; it also demonstrated that environmental degradation affects the poor more than the rich, as poorer people derive a much higher proportion of their income directly from the natural resources around them.

Instead, some in Africa and Asia are seeing their first lightbulbs illuminated by the power of sunlight stored in batteries.

In less-developed countries, such as those of sub-Saharan Africa and South-East Asia, wastage tends to occur primarily at the farmer-producer end of the supply chain.

Demographers (人口统计学者) reckon that three-quarters of humanity could be city-dwelling by 2050, with most of the increase coming in the fast-growing towns of Asia and Africa.

It is in this year that urbanisation made a start in Asia and Africa

The population increase in cities reached a new peak in Asia and Africa.

Some scientists believe that the rise in carbon levels means that the Amazon and other rain forests in Asia and Africa may go from being assets in the battle against rising temperatures to liabilities

According to data gathered by Harvard Law School professor Lani Guinier, the most selective schools are more likely to choose blacks who have at least one immigrant parent from Africa or the Caribbean than black students who are descendants of American slaves.

Named after a river that passes through the Congo, the Ebola virus originally manifested itself in the interior of Africa in 1976.

He was assassinated in Central Africa.

The British industrialist James Louis, held by kidnappers in Central Africa for the past 8 months, was released unharmed yesterday

"The yield is never going to be high," Farrant says, so these plants will be targeted not at Iowa farmers trying to squeeze more cash out of high-yield fields, but subsistence farmers who need help to survive a drought like the present one in South Africa

After that, a few small populations left Africa to populate the rest of the world.

And the World Resources Institute WR in its World Resources 2005 report, issued at the end of August, produced several such examples from Africa and Asia; It also demonstrated that environmental degradation affects the poor more than the rich, as poorer p

Biologist Jill Farrant of the University of Cape Town in South Africa says that nature has plenty of answers for people who want to grow crops in places with unpredictable rainfall.

Even Africa and the middle East, home to economies that are heavily dependent on fossil fuel exports, have enormous potential to develop renewables.

Food security and fortunes depend on sufficient rain, and nowhere more so than in Africa, where 96% of farmland depends on rain instead of the irrigation common in more developed places.

For example, the United Nations Children's Fund estimates that some 11 million children in Africa face hunger, disease, and water shortages as a result of the strongest El nio weather phenomenon in decades.

historian Paul Lovejoy relates that the cultivation of kola nuts in West Africa is hundreds of years old.

In Europe, parts of Italy, Greece, Portugal, Spain, and southern France adhere to principles of the Mediterranean diet, as do Morocco and Tunisia in North Africa.

In the rusty red deserts of South Africa, steep-sided rocky hills called inselbergs rear up from the plains like the bones of the earth.

In West Africa, people have long chewed kola nuts as stimulants, because they contain caffeine that also occurs naturally in tea, coffee, and chocolate.

It is believed to have originated in South America in the early 1900s, and later spread to Europe before crossing over to sub-Saharan Africa.

It really made it possible for us to continue along the path toward modern humans in Africa.

They include the United States, Austria, Costa rica, South Africa and Germany.

What we see today is the product of evolutionary events resulting from the dispersal of a few human populations out of Africa around 60, 000 to 70, 000 years ago.