Word: rising
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Dates: during 1990-1999
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Giving these laws an extra push will be the rise of tropical megacities--huge, densely packed cities in less developed nations. A U.N. study predicts that by the year 2015, there will be 26 extremely big cities on the planet, and 22 of them will be in less developed regions. The megacities will include Bombay (26 million people by 2015), Lagos (24 million), Dhaka (19 million) and Karachi (19 million). By 2030, almost 60% of the world's people will live in urban areas. By then, some megacities could have 30 million or more people. The population of California today...
...year vacation from nature still not fully realizing that our own survival hinges on reducing the damage we do to Earth's natural systems. We may not drive ourselves to the complete oblivion of biological extinction, but I fear that the Malthusian specters of famine, warfare and disease will rise in the comparatively short run (the next few centuries), coupled with an accelerating loss of human cultural diversity and, ultimately, quality of life...
...lower end of this predicted warming range, the temperature rise would take us back to the conditions that existed between A.D. 950 and 1350, when the climate was 1[degree]C (2[degrees]F) warmer than it is now. This time period is regarded as one of the most benign weather regimes in history. To find temperature swings at the upper end, you have to go back 10,000 years, to when the earth was exiting the last Ice Age. Temperatures during the Ice Age were 5[degrees]C (10[degrees]F) cooler than they are now, and there...
...people knew, or cared, that it existed; fewer still had actually laid eyes on the peak. Alex, Conrad and I were the first who had gone to the trouble to climb it, and the view from the top was ample reward. Countless other rock towers, equally strange and beautiful, rise from the ice in all directions, resembling gargantuan sailboats plying a chalk-white...
...water evaporates; what's left is saltier and thus denser. Eventually the dense surface water sinks to the sea bottom, where it flows back southward. And then, near the equator, warm, fresh water from tropical rivers and rain dilutes the salt once again, allowing the water to rise to the surface, warm up and begin flowing north again...