HOME >> BIOLOGY >> NEWS
International scientists probe unsolved puzzles of the Earth and beyond at "Earth System Processes"

Timothy Lenton of the Centre for Ecology and Hydrology, Edinburgh Research Station, considers the evolution of vascular plants and photosynthesis. He looks at how associated processes counteract loss of CO2 brought about by the interaction of such variables as increased solar luminosity, increased continental area, and decline in seafloor spreading. He predicts the extension of Earths current biosphere until catastrophic warming terminates complex life in approximately 1 Gyr.

David W. Schwartzman, Department of Biology, Howard University, addresses the question, Does life drive disequilibrium in the biosphere? Study of the carbonate-silicate geochemical cycle, or Urey reaction, has produced results counter-intuitive to a classical Gaian view.

Hiroshi Ohmoto, Astrobiology Research Center and Department of Geosciences, Penn State University, challenges the popular geological theory that oxygen didnt reach present levels until about 600 million years ago. Simulations based on a new theory linking O2 and CO2 rates of production and consumption to land area, soil erosion rate, and various other geochemical parameters, suggest that atmospheric O2 rose extremely rapidly following the emergence of cyanobacteria about 4 billion years ago. Results indicate that present levels may have been reached in less than 30 million years and produced a major divergence of aerobic and anerobic organisms. It is also probable that Earths early atmosphere already contained appreciable amounts of ozone and methane, providing a theoretical justification for NASA programs to detect life on other planets by searching for ozone and methane in their atmospheres.

SESSION 37: CRITICAL TRANSITIONS IN EARTH HISTORY AND THEIR CAUSES. Wednesday, June 27
Abstracts: http://gsa.confex.com/gsa/2001ESP/finalprogram/session_185.htm
Poster Session 41 abstracts:

Contact: Ann Cairns
acairns@geosociety.org
303-447-2020 x 1156
Geological Society of America
24-May-2001


Page: 1 2 3 4 5 6 7 8 9

Related biology news :

1. International study findings link acne-like rash to effectiveness of new targeted cancer treatment
2. USAID, Conservation International & Starbucks launch Conservation Coffee Alliance in Central America
3. ConocoPhillips & Conservation International launch Biodiversity Action Plan in Venezuela
4. A room with a view for the International Space Station: Completion of the cupola observation module
5. International symposium on nutritional genomics
6. First International Scientific Conference on Childhood Leukaemia
7. 1st International Conference on Cell Therapy for Cardiovascular Disease
8. International research conferences at the Villa Vigoni
9. Conservation International & SC Johnson invest in Ecuadors rainforest to offset climate impacts
10. STN International launches Derwent World Patents Index First View
11. Media invited to attend International Society For Heart & Lung Transplantation meeting April 21-24

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... LONDON , April 4, 2017 KEY ... is anticipated to expand at a CAGR of 25.76% ... neurodegenerative diseases is the primary factor for the growth ... full report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The ... of product, technology, application, and geography. The stem cell ...
(Date:3/30/2017)... Trends, opportunities and forecast in this market ... (fingerprint, AFIS, iris recognition, facial recognition, hand geometry, vein ... use industry (government and law enforcement, commercial and retail, ... others), and by region ( North America ... Pacific , and the Rest of the World) ...
(Date:3/24/2017)... Mar 24, 2017 Research and Markets has ... Market Analysis & Trends - Industry Forecast to 2025" report ... ... at a CAGR of around 15.1% over the next decade to ... report analyzes the market estimates and forecasts for all the given ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ... granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and Activator ... osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular STAT3 ...
(Date:10/10/2017)... PA (PRWEB) , ... October 10, 2017 , ... ... City Science Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives ... the award for Excellence in Volunteer Experience from US2020. , US2020’s mission is ...
(Date:10/10/2017)... 10, 2017 SomaGenics announced the receipt of ... develop RealSeq®-SC (Single Cell), expected to be the first ... (including microRNAs) from single cells using NGS methods. The ... to accelerate development of approaches to analyze the heterogeneity ... "New techniques for measuring levels of mRNAs in individual ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology:
Cached News: