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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: maceng2 who wrote (6126)	4/2/2006 5:52:45 PM
From: longnshort	Read Replies (1) \| Respond to of 36917

do you remember the Rivers in the US in the 50s-early 70s?? The Potomac was dead. they had signs if you even touched the water you had to immediatly wash that area. Now Bass fishing turnies are held there all the time, it is considered one of the finest bass rivers in the East. Remember the cleveland river in Mich catching fire in 1968?

To: maceng2 who wrote (6126)	4/3/2006 8:25:46 AM
From: average joe	Read Replies (1) \| Respond to of 36917

"Let’s remember where we live, Kenner was saying. We live on the third planet from a medium-size sun. Our planet is five billion years old, and it has been changing constantly all during that time. The Earth is on its third atmosphere. The first atmosphere was helium and hydrogen. It dissolved early on, because the planet was so hot. Then as the planet cooled, volcanic eruptions produced a second atmosphere of steam and carbon dioxide. Later the water vapor condensed, forming the oceans that cover most of the planet. Then, around three billion years ago, some bacteria evolved to consume carbon dioxide and excrete a highly toxic gas, oxygen. Other bacteria released nitrogen. The atmospheric concentration of these gases slowly increased. Organisms that could not adapt died out. Meanwhile, the planet’s land masses, floating on huge tectonic plates, eventually came together in a configuration that interfered with the circulation of ocean currents. It began to get cold for the first time. The first ice appeared two billion years ago. And for the last seven hundred thousand years, our planet has been in a geological ice age, characterized by advancing and retreating glacial ice. No one is entirely sure why, but ice now covers the planet every hundred thousand years, with smaller advances every twenty thousand or so. The last advance was twenty thousand years ago, so we’re due for the next one. And even today, after five billion years, our planet remains amazingly active. We have five hundred volcanoes and an eruption every two weeks. Earth quakes are continuous: a million and half a year, a moderate Richter 5 quake every six hours. Tsunamis race across the Pacific Ocean every three months. Our atmosphere is as violent as the land beneath it. At any moment there are one thousand five hundred electrical storms across the planet. Eleven lightning bolts strike the ground each second. A tornado tears across the surface every six hours. And every four days a giant cyclonic storm, hundreds of miles in diameter, spins over the ocean and wreaks havoc on the land. The nasty little apes that call themselves human beings can do nothing except run and hide. For these same apes to imagine they can stabilize this atmosphere is arrogant beyond belief. They can’t control the climate. The reality is, they run from the storms." Michael Chrichton – State of Fear – p.618 - 619

To: maceng2 who wrote (6126)	4/3/2006 12:30:25 PM
From: longnshort	Read Replies (1) \| Respond to of 36917

The cooling world TODAY'S COLUMNIST By Peter Gwynne April 3, 2006 There are ominous signs that the Earth's weather patterns have begun to change dramatically and that these changes may portend a drastic decline in food production -- with serious political implications for just about every nation on Earth. The drop in food output could begin quite soon, perhaps only 10 years from now. The regions destined to feel its impact are the great wheat-producing lands of Canada and the U.S.S.R. in the North, along with a number of marginally self-sufficient tropical areas -- parts ofIndia,Pakistan, Bangladesh, Indochina and Indonesia -- where the growing season is dependent upon the rains brought by the monsoon. The evidence in support of these predictions has now begun to accumulate so massively that meteorologists are hard-pressed to keep up with it. In England, farmers have seen their growing season decline by about two weeks since 1950, with a resultant overall loss in grain production estimated at up to 100,000 tons annually. During the same time, the average temperature around the equator has risen by a fraction of a degree -- a fraction that in some areas can mean drought and desolation. Last April, in the most devastating outbreak of tornadoes ever recorded, 148 twisters killed more than 300 people and caused half a billion dollars' worth of damage in 13 U.S. states. To scientists, these seemingly disparate incidents represent the advance signs of fundamental changes in the world's weather. Meteorologists disagree about the cause and extent of the trend, as well as over its specific impact on local weather conditions. But they are almost unanimous in the view that the trend will reduce agricultural productivity for the rest of the century. If the climatic change is as profound as some of the pessimists fear, the resulting famines could be catastrophic. "A major climatic change would force economic and social adjustments on a worldwide scale," warns a recent report by the National Academy of Sciences, "because the global patterns of food production and population that have evolved are implicitly dependent on the climate of the present century." A survey completed last year by Dr. Murray Mitchell of the National Oceanic and Atmospheric Administration reveals a drop of half a degree in average ground temperatures in the Northern Hemisphere between 1945 and 1968. According to George Kukla of Columbia University, satellite photos indicated a sudden, large increase in Northern Hemisphere snow cover in the winter of 1971-72. And a study released last month by two NOAA scientists notes that the amount of sunshine reaching the ground in the continental U.S. diminished by 1.3% between 1964 and 1972. To the layman, the relatively small changes in temperature and sunshine can be highly misleading. Reid Bryson of the University of Wisconsin points out that the Earth's average temperature during the great Ice Ages was only about seven degrees lower than during its warmest eras -- and that the present decline has taken the planet about a sixth of the way toward the Ice Age average. Others regard the cooling as a reversion to the "little ice age" conditions that brought bitter winters to much of Europe and northern America between 1600 and 1900 -- years when the Thames used to freeze so solidly that Londoners roasted oxen on the ice and when iceboats sailed the Hudson River almost as far south as New York City. Just what causes the onset of major and minor ice ages remains a mystery. "Our knowledge of the mechanisms of climatic change is at least as fragmentary as our data," concedes the National Academy of Sciences report. "Not only are the basic scientific questions largely unanswered, but in many cases we do not yet know enough to pose the key questions." Meteorologists think that they can forecast the short-term results of the return to the norm of the last century. They begin by noting the slight drop in overall temperature that produces large numbers of pressure centers in the upper atmosphere. These break up the smooth flow of westerly winds over temperate areas. The stagnant air produced in this way causes an increase in extremes of local weather such as droughts, floods, extended dry spells, long freezes, delayed monsoons and even local temperature increases -- all of which have a direct impact on food supplies. "The world's food-producing system," warns Dr. James D. McQuigg of NOAA's Center for Climatic and Environmental Assessment, "is much more sensitive to the weather variable than it was even five years ago." Furthermore, the growth of world population and creation of new national boundaries make it impossible for starving peoples to migrate from their devastated fields, as they did during past famines. Climatologists are pessimistic that political leaders will take any positive action to compensate for the climatic change, or even to allay its effects. They concede that some of the more spectacular solutions proposed, such as melting the Arctic ice cap by covering it with black soot or diverting arctic rivers, might create problems far greater than those they solve. But the scientists see few signs that government leaders anywhere are even prepared to take the simple measures of stockpiling food or of introducing the variables of climatic uncertainty into economic projections of future food supplies. The longer the planners delay, the more difficult will they find it to cope with climatic change once the results become grim reality. "The Cooling World": From Newsweek, April 28, 1975. ?1975 Newsweek Inc. All rights reserved. Reprinted by permission.