Friday, September 8, 2006
Tomorrow the Economist will publish its survey on climate change "The Heat is On." Economist link I heartily recommend it for anyone who wants to bring their students or themselves quickly up to speed regarding the science, technology, economics, and law of climate change -- about 15 pages, incorporating much of the climate research I have blogged this year. As of yesterday, you can buy a PDF for $5 (or read/print each article in the online version if you have an Economist online subscription).
September 8, 2006 in Africa, Agriculture, Air Quality, Asia, Biodiversity, Climate Change, Economics, Energy, EU, Forests/Timber, Governance/Management, International, Law, Legislation, North America, Physical Science, Sustainability, US, Water Resources | Permalink | TrackBack (0)
Prawfsblawg is pleased to announce the "Research Canons" project. The purpose of this project is to get input from you, our readers, about the most important works of scholarship in the various areas of legal inquiry.
Unlike other disciplines, most law academics do not have an advanced degree in "law." For students pursuing a Ph.D in areas such as economics, history, or social psychology, they must pass comprehensive exams showing that they have a broad knowledge of the most important works in the field. It is only after comps that students go on to complete their specialized dissertation research.
Legal academia assumes that entry-level candidates and new scholars have done the background research necessary for their area of expertise. But it is left to the individual to get this knowledge. Certainly, the J.D. provides a baseline, and mentors are helpful in providing further direction. But there is nothing akin to comps that sets forth a comprehensive listing for new folks to follow. Many of us have heard the question, in the AALS interview, in the job talk, or as a new scholar presenting a paper: "Well, of course, you have read the work of Prof. X in this area, right?" Failure to respond appropriately to this question may raise eyebrows and cast doubt on the scholar's research.
The Research Canons project is intended to fill this gap.
Thursday, September 7, 2006
The Science of Global Warming: Oldest Ice Core Study Confirms that Warming is Not Part of Natural Cycle
ENS reported on September 5:<><>>>
Ice core records from Antarctica show the current levels of carbon dioxide in the atmosphere are higher now than at any time in the past 800,000 years and increasing at an unprecedented rate. The analysis, announced Monday by researchers with the British Antarctic Survey (BAS), is further evidence that humans are adding large amounts of the heat-trapping gas to the planet's atmosphere and causing significant changes to the climate. The 3.2-kilometer East Antarctica ice core is the deepest ever removed and its air bubbles provide evidence of the composition of the atmosphere over the past 800,000 years ago. BAS scientists report the core shows there have been eight cycles of atmospheric change in that time frame when levels of carbon dioxide and methane, another greenhouse gas, peaked - and each has been accompanied by warming in the climate.>
But the current peak levels are far above anything seen in past cycle and the rate of change is alarming, the scientists said.<>
"Ice cores reveal the Earth's natural climate rhythm over the last 800,000 years," said Eric Wolff a BAS ice core chemist. "Over the last 200 years human activity has increased carbon dioxide to well outside the natural range and we have no analogue for what will happen next." Wolff is the leader of the science team for the European Project for Ice Coring in Antarctica, which drilled the ice core.>>
Ice cores provide scientists critical records of the climate over time. (Photo courtesy NASA)
Analysis of the ice core showed that the levels of carbon dioxide in the atmosphere ranged between 180 parts per million (ppm) and 300 ppm over the past 800,000 years. But the amount of carbon dioxide remained relatively steady, the researchers said, until about 200 years ago - when humans began widely burning fossil fuels. Levels of atmospheric carbon dioxide have jumped 35 percent in the past two centuries and are rising at an unprecedented rate. Carbon dioxide levels have risen 30 ppm in the past 17 years - an increase that used to take 1,000 years.
Furthermore, methane had never tipped 750 parts per billion (ppb), but is now 1,780 ppb. Methane is considered the second-most significant greenhouse gas - it is more powerful than carbon dioxide, but released at much lower levels. It contributes about 20 percent of the warming from all greenhouse gases and is released by humans through burning of grasslands, forest and wood fuel as well as by intense livestock activity, rice cultivation, and industrial sources.>
A study released last year by American and Australian scientists found that methane levels in the atmosphere have risen nearly 300 percent since the 1700s.
The BAS researchers cautioned that natural carbon sinks in the ocean and on land could reach capacity if greenhouse gas emissions continue to increase at current rates. "Our land and oceans may well become less efficient carbon sinks as concentrations increase," said Dr. Corrinne Le Quéré, a physicist and BAS carbon cycle expert. "We cannot rely on them to solve the problem.">