Global Warming Causes, Effects, Information and Awareness
This website provides information and articles on global warming and climate change and the various interrelated issues we will face in the future, the solutions we may choose, the politics involved. It is designed to give a basic introduction to the multifaceted problems we face from global warming and climate change - crop failure, food shortages, water shortages, rising seas, declining ice sheets, mass migrations, water wars, acidic oceans and increased conflict on a planet with dwindling resources and rising population. We are at a critical point in human history. It is only through global warming awareness that we can hope to change course intelligently. Due to necessity we will change our ways. May it not come too late.
But the data just keep getting worse. The news this fall that Arctic sea ice was melting at an off-the-charts pace and data from Greenland suggesting that its giant ice sheet was starting to slide into the ocean make even 450 look too high. Consider: We're already at 383 parts per million, and it's knocking the planet off kilter
Nine ways in which the Earth could be tipped into a potentially dangerous state that could last for many centuries have been identified by scientists investigating how quickly global warming could run out of control. . . . . . .
The nine elements range from the melting of polar ice sheets to the collapse of the Indian and West African monsoons. The effects of the changes could be equally varied, from a dramatic rise in sea levels that flood coastal regions to widespread crop failures and famine. Some of the tipping points may be close at hand, such as the point at which the disappearance of the summer sea ice in the Arctic becomes inevitable, whereas others, such as the tipping point for the destruction of northern boreal forests, may take several more decades to be reached.
What we need to be thinking of as humans causing changes to the Earth system is what the consequences will be to us human beings,” said Edwards, the USC geo-microbiologist. “The Earth could care less. We will be recorded as a minor perturbation in the Earth system. The Earth will go on. The question is: Will we?”
Most scientists agree that greenhouse gases from fossil fuels have contributed to the warming of the planet in the past few decades but have questioned whether a brighter Sun is also responsible for rising temperatures.
"We're having an increasing trend of odd years," said Michael MacCracken, a former top federal climate scientist, now chief scientist at the Climate Institute in Washington. "Pretty soon odd years are going to become the norm."
Estimates of sea level over the last 540 million years. The two curves (red and blue) represent radically different techniques for estimating sea level. Neither has sufficient resolution to actually show sea level changes during the most recent few millennia. The vertical black bar in the lower left corner indicates the range of sea level values during the most recent glacial to interglacial transition (from the Wisconsin glacial through the Holocene interglacial). Credit: Image by Robert A. Rohde, courtesy of the Global Warming Art Project.
Paris - The human population is living far beyond its means and inflicting damage to the environment that could pass points of no return, according to a major report being issued today by the United Nations.
Climate change, the rate of extinction of species, and the challenge of feeding a growing population are among the threats putting humanity at risk, according to the United Nations Environment Program in its fourth Global Environmental Outlook since 1997.
"The human population is now so large that the amount of resources needed to sustain it exceeds what is available at current consumption patterns," Achim Steiner, the executive director of the Environment Program, said in a telephone interview. Efficient use of resources and reducing waste now are "among the greatest challenges at the beginning in of 21st century," he said.
Patzek, in a controversial paper presented last month to the Organization for Economic Co-operation and Development, says military battles over fast-depleting fossil fuels will combine with insufficient replacement strategies and escalating population growth soon to imperil the human race unless coordinated global efforts to curb energy demand are taken quickly. "Change will be made for us unless we make changes," he said in an interview from his UC Berkeley office this week.
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