Early in the 21st century, more than 20 of this assembly's members, home to half the earth's population, will lift themselves from the ranks of low-income nations.
The report says the Earth's population is likely to increase from 6.4 billion people today to 8.9 billion by 2050, with the 50 poorest countries tripling in total numbers to 1.7bn people.
BBC: NEWS | Science/Nature | Slowing population 'lacks funds'
My father and I were disappointed to arrive at the 1965 New York World's Fair after the scoreboard-style lighted display on the Earth's population changed from 2, 999, 999, 999 people to a bit over 3 billion.
The Earth's population is expected to increase by half over the next four decades, to around 9 billion, and most of the additional 3 billion-odd hungry mouths will be in developing countries, especially tropical ones.
The search juggernaut is faced with the endless task of reading and ranking the ever-expanding Web's billions of pages, the equivalent of putting the Earth's population in order from tallest to shortest every few minutes.
The remarkable fact is that, even though the earth's population has more than trebled in a century, the best measure of the scarcity of resources price has fallen virtually throughout that time for just about everything extracted from or grown in the earth, yet has risen, in the form of wages, for the one thing that has become far more abundant: people.
Although there is no early prospect of a global shortage of any of the earth's resources, a larger population does change the earth and its environment, removing forests, cultivating land or building on it, and driving out other species, and that is itself a cause for legitimate concern.
One could think of many reasons for considering a human base on Mars - such as over-population on Earth - but Darlene Lim is mainly motivated by the thrill of exploration.
If nothing changes, we will need several planets Earth to sustain a global population achieving the current lifestyle of the average European or North American.
The Club of Rome has just projected a future in which the demands of a growing human population outstrip the Earth's capacity to provide.
The figure would represent around one in nine people on earth, according to current population projections, but would mainly affect the world's poorest people in Africa, Asia and Latin America, according to the authors of "Human Tide: The Real Migration Crisis, " produced buy the charity Christian Aid.
In part, this is because the interglacial during which human population has expanded to cover the earth is ending, and in part it is because mankind does not have planetary institutions that are sufficiently robust to enable widespread agreement about this issue.
While there is no doubt that wind, solar and geothermal have ample energy to power the planet--the sunlight that hits Earth in a single hour contains enough energy to fuel the human population for a year--they will need years to mature before they reach anything approaching their potential.
More than 200 years ago, when the planet was inhabited by less than one-sixth the population it supports today, the pessimistic preacher posited the idea that Earth's big problem was too many people, that overpopulation made prosperity impossible.
"With only a small variation in fertility, particularly in the more populous countries, the total could be higher: 10.6 billion people could be living on Earth by 2050 and more than 15 billion in 2100, " says the Population Division of the U.N.
CNN: U.N.: World can 'thrive' as population reaches 7 billion
Two years later, at the first Earth Day, its founder predicted that the greatest challenge to the environment would be population growth.
The New York metropolitan area is home to the largest Jewish population outside Israel, and "perhaps more than any other city on earth, we're truly aware of the challenges facing Israel, " said Weiner, who wore blue slacks and a white top.
Mountain regions represent about one quarter of the Earth's terrestrial surface, and are home to approximately 25% of the global population.
"Since the population of our planet keeps growing, and the amount of land on this Earth is limited, a more efficient, and more sustainable system of food production is needed, " Oonincx said in a statement.
This looks like a re-run of the discussion leading up to the Rio Earth Summit in 1992, in which development groups angrily rejected any intellectual framing in which population growth in developing countries was identified as the core global problem.
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