Navigation Links
Revised theory suggests carbon dioxide levels already in danger zone
Date:11/7/2008

New Haven, Conn. If climate disasters are to be averted, atmospheric carbon dioxide (CO2) must be reduced below the levels that already exist today, according to a study published in Open Atmospheric Science Journal by a group of 10 scientists from the United States, the United Kingdom and France.

The authors, who include two Yale scientists, assert that to maintain a planet similar to that on which civilization developed, an optimum CO2 level would be less than 350 ppm a dramatic change from most previous studies, which suggested a danger level for CO2 is likely to be 450 ppm or higher. Atmospheric CO2 is currently 385 parts per million (ppm) and is increasing by about 2 ppm each year from the burning of fossil fuels (coal, oil, and gas) and from the burning of forests.

"This work and other recent publications suggest that we have reached CO2 levels that compromise the stability of the polar ice sheets," said author Mark Pagani, Yale professor of geology and geophysics. "How fast ice sheets and sea level will respond are still poorly understood, but given the potential size of the disaster, I think it's best not to learn this lesson firsthand."

The statement is based on improved data on the Earth's climate history and ongoing observations of change, especially in the polar regions. The authors use evidence of how the Earth responded to past changes of CO2 along with more recent patterns of climate changes to show that atmospheric CO2 has already entered a danger zone.

According to the study, coal is the largest source of atmospheric CO2 and the one that would be most practical to eliminate. Oil resources already may be about half depleted, depending upon the magnitude of undiscovered reserves, and it is still not practical to capture CO2 emerging from
'/>"/>

Contact: Janet Rettig Emanuel
janet.emanuel@yale.edu
203-432-2157
Yale University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. New and revised limits ensure safety in the workplace
2. Interacting protein theory awaits test from new neutron analysis tools
3. St. Jude identifies the specific cell that causes eye cancer, disproving long-held theory
4. Study proposes new theory of how viruses may contribute to cancer
5. Group selection, a theory whose time has come...again
6. Breakthrough technology observes synapse in real time, supporting theory of vesicular recycling
7. Innovative model connects circuit theory to wildlife corridors
8. Model connects circuit theory to wildlife corridors
9. Zoologists challenge longstanding theory that eyespots mimic the eyes of predators enemies
10. Researchers offer new theory for dogfish and skate population outburst on Georges Bank
11. Woolly-mammoth gene study changes extinction theory
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Revised theory suggests carbon dioxide levels already in danger zone
(Date:11/21/2014)... REDMOND, Wash. , Nov. 20, 2014 ... access for the Internet of Things (IoT), today announced ... position of chief operating officer. Previously a strategic advisor ... marketing, finance, and operations. Mr. Traynor is based out ... . He reports to Chris Muench , ...
(Date:11/18/2014)... , Nov. 17, 2014   ... EMC collaborate to develop The Partners Data Lake, ... The Partners Data Lake will allow researcher and ... diagnostics, treatment and the lives of patients ... and clinical activities across the Partners system, breaking ...
(Date:11/15/2014)... 13, 2014  While we may still be a few ... in "Star Trek" to gain instant access to all that ... with smartphones and tablets for monitoring and measuring our health ... This may seem a tad Orwellian to some, but a ... of these technological opportunities into their healthcare regime. ...
Breaking Biology News(10 mins):C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4
... missing flu virus. When the flu isnt making people sick, ... Earth, it reappears in the appropriate season and starts its ... it hibernate, lying dormant in a few people and preparing ... Northern hemisphere to the Southern hemisphere and back, following the ...
... Researchers have discovered the secrets to enhancing youth ... 3-year study entitled Greener Voices proves that children ... responsibility for decisionmaking and planning. Childrens gardens ... are popping up in schools, communities, public venues, ...
... in Spanish . Breaking up the dosage ... of wheat and limits its negative effects on the environment. ... of the Basque Country (UPV-EHU) researcher, Teresa Fuentes Mendizbal, presented ... Wheat yields have increased over the decades, more concretely during ...
Cached Biology News:Tracking influenza's every movement 2Children's gardens mushrooming 2Dosage of fertilizer helps to enhance quality of wheat 2Dosage of fertilizer helps to enhance quality of wheat 3
(Date:12/17/2014)... Dec. 17, 2014 Tigercat Pharma, Inc. ... study evaluating the investigational oral NK-1 receptor antagonist ... severe, chronic itch who are unresponsive or inadequately ... topical steroids and antihistamines. The ... Analog Scale (VAS) itch score from baseline, comparing ...
(Date:12/15/2014)... YORK , Dec. 15, 2014  GlassesOff Inc. ... Yuval Bar-Gil as an independent director of the ... founder of AeroScout and served as its CEO until ... in 2012, a $240 million transaction. Recognized as the ... Mr. Bar-Gil,s leadership, AeroScout provided Wi-Fi -based RFID solutions ...
(Date:12/13/2014)... Clarassance, a privately held clinical-stage biotechnology company based ... Therapeutics , Inc. The new name is derived from ... in the lungs similar to branches on a tree), ... therapeutics for the treatment of respiratory diseases. , ... to mark the company's escalation into the clinical phase ...
(Date:12/13/2014)... December 13, 2014 QuickSTAT is making ... and Cold Chain capabilities, and is delighted to announce ... France, to serve Life Science clients in the region. ... a controlled-ambient warehouse, will provide 24/7 transportation and logistics ... investigational drugs, patient-clinical specimens, API, following IATA rules and ...
Breaking Biology Technology:Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4AeroScout Founder Joins GlassesOff's Board of Directors 2AeroScout Founder Joins GlassesOff's Board of Directors 3Maryland-based Biotech Company's Path Forward in Treating Respiratory Diseases Sparks Name Change 2Quick Opens Office in France to Serve Life Science Community In France and Neighboring French-Speaking Countries 2
... America, Inc.  (OTC Bulletin Board: CBAI ) announced ... www.bancovida.com ) to offer umbilical cord blood collection services in ... will allow BancoVida and Cord Blood America to educate prospective ... of storing their baby,s umbilical cord blood.  The stem cells ...
... 26, 2011 Infrared Systems International (OTCBB: IFRS) announces ... strategies for continued success. Most recently, the ... its subsidiary, Infrared Applications, Inc. (IAI).  The distribution marks ... from one engaged in the aerospace industry to one ...
... Shire plc (LSE: SHP, NASDAQ: SHPGY ... U.S. Food and Drug Administration (FDA) has granted marketing approval ... attacks of hereditary angioedema (HAE) in adults 18 years of ... challenges gaining rapid access to acute treatment such as the ...
Cached Biology Technology:Cord Blood America Enters Agreement With BancoVida, a Cord Blood Collection Company in San Juan, Puerto Rico 2Infrared Systems International Reflects on Past and Looks Forward to the Future 2Infrared Systems International Reflects on Past and Looks Forward to the Future 3FDA Approves Shire's FIRAZYR® (icatibant injection) for Acute Attacks of Hereditary Angioedema (HAE) 2FDA Approves Shire's FIRAZYR® (icatibant injection) for Acute Attacks of Hereditary Angioedema (HAE) 3FDA Approves Shire's FIRAZYR® (icatibant injection) for Acute Attacks of Hereditary Angioedema (HAE) 4FDA Approves Shire's FIRAZYR® (icatibant injection) for Acute Attacks of Hereditary Angioedema (HAE) 5FDA Approves Shire's FIRAZYR® (icatibant injection) for Acute Attacks of Hereditary Angioedema (HAE) 6
Human TFPI Affinity Purified Polyclonal Ab Protein Family: Coagulation, Inflammation, Serine Protease Regulators...
TMB Slow Kinetic One Component HRP Microwell Substrate, 1 L...
Eppendorf tube holder, for Tube rack 175 x 12 mm, 100. Category: Chromatography Systems & Accessories, Systems....
Pooled normal sreum with 0.1% sodium azide as preservative...
Biology Products: