Between 2002 and 2050, world average life expectancy is expected to rise from 66 to 77 years — with the number of those over 60 years old increasing by 333%.

(United Nations)

Between 2000 and 2050, average life expectancy is expected to rise by 6.1 years in Europe, 5.1 years in the United States — and 6.5 years in Japan.

(United Nations)

In 2000, India's GDP per capita was $468 — but by 2050, this number is expected to rise to $17,366, or roughly the level of Italy's GDP per capita in 2000.

(Goldman Sachs)

At projected growth rates, by 2050 Russia's per capita GDP will reach $49,646 — exceeding that of Germany.

(Goldman Sachs)

If China's GDP grows at an average of 4% to 5% annually, while India's economic output rises 3% to 4% each year, the income ratio between rich and poor people in the world would fall from 9:1 in 2000 to 4:1 by 2050.

(Institute for International Economics)

The average debt-to-GDP ratio of all EU countries will rise from about 60% to almost 200% in 2050 — primarily as a result of their aging populations.

(European Commission)

Between 2000 and 2050, Germany would need 181.5 million immigrants — an inflow of 2.6 million per year — to maintain its current old-age dependency ratio. Under this scenario, 80% of the people living in Germany would be immigrants or their progeny by 2050.

(United Nations)

By 2050, non-Hispanic whites will account for only one-fifth of the world's three billion Christians.

(World Christian Encyclopedia)

Developing countries accounted for 37% of greenhouse gas emissions in 2003. By 2050, their share could be 55%.

(International Energy Agency)

In 2050, there could be as many as 1.4 billion people who speak Mandarin as their primary language, 556 million who speak Hindu-Urdu, 508 million who speak English, 486 million who speak Spanish — and 482 million who speak Arabic.

(Foreign Policy)