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:10/4/2017)... Solutions, a global clinical research organization (CRO), announces the launch of ... 4, 2017. Shadow is designed to assist medical writers and biometrics ... the European Medicines Agency (EMA) in meeting the requirements for de-identifying ... ... ...
(Date:7/20/2017)... DAL ) customers now can use fingerprints instead of their ... (DCA). ... launches biometrics to board aircraft at Reagan Washington National Airport ... Delta,s biometric boarding pass experience that launched in May at ... process to allow eligible Delta SkyMiles Members who are enrolled in CLEAR ...
(Date:6/14/2017)... 15, 2017  IBM (NYSE: IBM ) is introducing several ... dedicated to developing collaboration between startups and global businesses, taking ... During the event, nine startups will showcase the solutions they ... industries. France is ... with a 30 percent increase in the number of startups ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... Disappearing forests and increased emissions are the main ... people each year. Especially those living in larger cities are affected by air pollution ... of the most pollution-affected countries globally - decided to take action. , “I knew ...
(Date:10/11/2017)... Florida (PRWEB) , ... October 11, 2017 , ... ... Drug Administration (FDA) has granted orphan drug designation to SBT-100, its novel anti-STAT3 ... for the treatment of osteosarcoma. SBT-100 is able to cross the cell membrane ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... antibody-drug conjugate (ADC) therapeutics, today confirmed licensing rights that give it exclusive ... a technology developed in collaboration with Children’s Hospital Los Angeles (CHLA). ...
(Date:10/10/2017)... ... ... Dr. Bob Harman, founder and CEO of VetStem Biopharma, Inc. ... event entitled “Stem Cells and Their Regenerative Powers,” was held on August 31st, ... was joined by two human doctors: Peter B. Hanson, M.D., Chief of Orthopedic Surgery, ...
Breaking Biology Technology:
Cached News: