Study: Earth at hottest in 2000 years – humans responsible – from Perth Indymedia
JUNE 22, 2006: The National Academy of Sciences Study: Earth is hottest now in 2,000 years – and humans are responsible for much of the warming.
A group of leading climate scientists have told US congress that the Earth is heating up – and that "human activities are responsible for much of the recent warming."
Their 155-page report said average global surface temperatures in the Northern Hemisphere rose about 1 degree during the 20th century…
There is sufficient evidence from tree rings, retreating glaciers, and other "proxies" to say with confidence that the last few decades of the 20th century were warmer than any comparable period in the last 400 years, according to a new National Research Council report. It has been 2,000 years and possibly much longer since the Earth has run such a fever.
The National Academy of Sciences report that the "recent warmth is unprecedented for at least the last 400 years and potentially the last several millennia." This is shown in boreholes, retreating glaciers and other natural evidence found in nature, said Gerald North, a geosciences professor who chaired the academy's panel. The report was commissioned by Congress to address climate change critics – who question whether global warming is a major threat.
Other new research has show that global warming produced about half of the extra hurricane-fueled warmth in the North Atlantic in 2005 according to the National Center for Atmospheric Research. Climate scientists have also concluded the Northern Hemisphere was the warmest it has been in 2,000 years.
Their research was known as the "hockey-stick" graphic because it compared the sharp curve of the hockey blade to the recent uptick in temperatures and the stick's long shaft to centuries of previous climate stability. The panel also looked at how other scientists reconstructed the Earth's temperatures going back thousands of years, before there was data from modern scientific instruments.
Except for the last 150 years, the academy scientists relied on "proxy" evidence from tree rings, corals, glaciers and ice cores, cave deposits, ocean and lake sediments, boreholes and other sources. They also examined indirect records such as paintings of glaciers in the Alps. Combining the data, the academy concluded that: "a high level of confidence that the last few decades of the 20th century were warmer than any comparable period in the last 400 years."
Overall, the panel agreed that the warming in the last few decades of the 20th century was unprecedented over the last 1,000 years… The Bush administration maintains that the threat of rapid onset, human-induced, climate change is not severe enough to warrant new pollution controls.
Key conclusions reached after reviewing the evidence:
- The instrumentally measured warming of about 0.6°C during the 20th century is also reflected in borehole temperature measurements, the retreat of glaciers, and other observational evidence, and can be simulated with climate models.
-Large-scale surface temperature reconstructions yield a generally consistent picture of temperature trends during the preceding millennium, including relatively warm conditions centered around A.D. 1000 (identified by some as the “Medieval Warm Period”) and a relatively cold period (or “Little Ice Age”) centered around 1700.
- It can be said with a high level of confidence that global mean surface temperature was higher during the last few decades of the 20th century than during any comparable period during the preceding four centuries. This statement is justified by the consistency of the evidence from a wide variety of geographically diverse proxies.
- Less confidence can be placed in large-scale surface temperature reconstructions for the period A.D. 900 to 1600. Presently available proxy evidence indicates that temperatures at many, but not all, individual locations were higher during the past 25 years than during any period of comparable length since A.D. 900. The uncertainties increase substantially backward in time through this period and are not yet fully quantified.
- Very little confidence can be assigned to statements concerning the hemispheric mean or global mean surface temperature prior to about A.D. 900.
Source:
Media rlease: High Confidence That Planet Is Warmest in 400 Years
The Howard government is pushing for all asylum seekers who arrive by boat, whether or not they reach the Australian mainland, to be sent to remote, off-shore immigration detention centres in places like Nauru or Manus Island in Papua New Guinea.

The “disastrous consequences of long-term detention on the mental health of asylum seekers are now beyond dispute,” say HREOC. “The proposed changes do not provide proper measures to address mental health concerns.” HREOC say the tragic cases of Vivian Solon and Cornelia Rau show that mistakes do happen at a departmental level.

Of nuclear reactors, Moore – king of specious reasoning says: "If you look at automobiles, 1.2 million people die in automobile accidents every year. Who's banning the automobile? I mean, if you really wanted to ban a technology that was causing death and destruction and injury, it would be the car." (
Moore's business relationships with polluters and clear-cutters invokes widely-held rebuke and disgust from his estranged eco-comrades. "He'll whore himself to anything to make a buck," says Paul George, founder of the 

