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The model warns us that the involuntary decline of the human population in the aftermath of the Oil Age will not happen without overwhelming universal hardship. There are things we will be able to do as individuals to minimize the personal effects of such a decline, and we should all be deciding what those things need to be. It's never too early to prepare for a storm this big.
Okay, I posted a very long article about how "peak food" is really a function of poverty and not carrying capacity...no one responds...but now sega is making cricket noises. That's pretty typical for this sort of debate.
Yet, the roots of this would be in how resources are consumed etc, rather than just population growths and declines. Consumption modes, the political and economic models that support certain ways of consumption therefore have a far greater impact on the environment than “over” population, alone.
slimmouse wrote:We can irrigate the desserts for nothing
We can educate people for nothing.
Anyone who truly believes that any discussion about the need for population reduction is based upon genuine scientific fact is to my mind, a by- product of Nazi Germany.
But then again, theres a lot of it about.
All I see here is "population reduction." No numbers, no mechanism, no plan.
Pollution kills 460,000 Chinese a year: World Bank
....Climate model studies of extreme heat events in a global-warming world project more intense, frequent, and lengthy heat waves as we progress through the 21st century. The trend is not simply a result of warm seasons growing warmer, but a distinctive pattern connected to atmospheric circulation.
Gerald Meehl and Claudia Tebaldi (Science, 305 (5686), 994 - 997; pdf of technical paper; BBC story), climatologists at the U.S. National Center for Atmospheric Research, studied the effect of global warming on heat waves by comparing modeled climates for a suite of greenhouse gas emissions scenarios with the present climate. They found that global warming amplifies positive height anomalies for the 500 mb surface (anomalies grow larger). Put another way, you get more bang for your greenhouse gas buck in regions already characterized by summertime warm high-pressure cells.
The models project changes is in both intensity and frequency of heat waves. This means stronger events in regions already known for heat waves, such as the midwestern and southern U.S. and the Mediterranean region, but it could also mean new risks in regions that at present experience relatively mild heating events, such as the northwestern U.S., France, Germany, and the Balkans.
city living
Urbanization poses an additional challenge in regions characterized by heat waves. In a global warming world, health risks associated with heat events come not only from the events themselves but also from changing demographics and land use. Right now, about 3 billion people, half of us, live in cities. Three-fifths of the (human) population is expected to be living in urban areas by 2030, most of them with relatively meager resources.
Cities (and suburbs) are often significantly warmer than surrounding rural areas, by anywhere from 2 to 10 degrees F. This "heat island" effect is a result of changes to surface materials (infrastructure replacing vegetation), changes to near-surface air circulation (stagnant air in the narrow "canyons" between tall buildings), and "waste" heat produced by vehicles and buildings (manufacturing, air conditioners, etc.). Re-radiation of energy absorbed during the day keeps cities warm at night.
Removal of vegetation in favor of paved and built surfaces is an important part of the heat island effect. First, it can increase the amount of solar energy the absorbed by the landscape. Warmer materials re-radiate more heat to near-surface air, warming the air. Second, it reduces evaporation from soil and leaves (evapotranspiration). The phase change from liquid to vapor uses energy and thus has a cooling effect so when evapotranspiration is reduced, so is the cooling effect it provides. A large deciduous tree can evapotranspire up to 40 gallons of water a day, equivalent to several degrees of cooling (U.S. EPA). Third, loss of shading allows surfaces to absorb more incoming solar radiation than would otherwise be the case.....
An increase in summertime heat waves from global warming could mean more deaths among Americans each year, a study by Harvard researchers suggests........
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