HOME >> BIOLOGY >> NEWS
Tropical glaciers formed while earth was giant snowball

rchers have estimated that it required a buildup of carbon dioxide by volcanic outgassing to 300 times today's levels to bring Earth out of snowball Earth, which accounts for the millions of years necessary to reverse the process.

Some scientists question whether life could have survived a full snowball-Earth episode, and therefore suggest that the Earth never passed beyond the critical point with sea ice down to about 30 degrees latitude. However, the Penn State results imply that full snowball Earth must have occurred in order to produce the observed tropical glacial deposits at sea level. Others have suggested that oceanic life could have survived full snowball episodes below gaps in the ice around volcanic island, or in tropical oceans where sunlight may have limited sea ice thickness to only a few meters.


'"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
31-May-2001


Page: 1 2 3

Related biology news :

1. Tropical legume could be alternative hay/forage crop for Texas
2. Tropical deforestation and global warming
3. Arthropods of Tropical Forests
4. Tropical Science for the 21st Century
5. A Magic Web: The Tropical Forest of Barro Colorado
6. Ira Rubinoff honored by the Association for Tropical Biology
7. Tropical forests under surveillance
8. Tropical scientists find fewer species than expected
9. Sessions on bioterrorism featured at Tropical Medicine Meeting
10. Chemistry in the Amazon: Tropical birds, Amazonian tribespeople derive medicinal benefits from insects, plants
11. Tropical tree distribution could have implications for forest management, conservation

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Tropical glaciers formed while earth was giant snowball

(Date:3/11/2015)... 11, 2015 Research and Markets ( ... "Access Control Market by Product, Application & By Geography ... to their offering. , This report predicts ... $10.4 billion by 2020, with an estimated CAGR of ... the products types such as contact cards & readers, ...
(Date:3/10/2015)... March 10, 2015   Tute Genomics , pioneer ... selected by next-generation sequencing company PrimBio Research Institute ... and targeted gene panel interpretation. PrimBio, a ... the most current technologies to support the work of ... company offers two types of exome sequencing services: 1) ...
(Date:3/3/2015)... FOREST, Calif. , March 3, 2015 ... the leading provider of advanced cryogenic logistics ... markets including immunotherapies, stem cells, cell lines, ... and reproductive medicine, today announced the expansion ... Cancer Research Centers, ("Fred Hutch") Clinical ...
Breaking Biology News(10 mins):Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2PrimBio Research Selects Tute as Whole Exome Analysis Provider, Creating Integrated, End-to-End Solution for Next-Generation Sequencing & Data Analysis 2PrimBio Research Selects Tute as Whole Exome Analysis Provider, Creating Integrated, End-to-End Solution for Next-Generation Sequencing & Data Analysis 3Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 2Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 3
(Date:3/27/2015)... -- WuXi PharmaTech (Cayman) Inc. (NYSE: WX ... platform company serving the global pharmaceutical, biotechnology, and ... New Drug (IND) application for WuXi MedImmune,s novel ... accepted for review by the China Food and ... 2012, MedImmune, the global biologics research and development ...
(Date:3/26/2015)... , March 26, 2015 /PRNewswire/ - SQI Diagnostics Inc. ... that after dealing with certain matters, including the appointment ... held on March 26, 2015 (the "Meeting") was adjourned, ... 8, 2015 at 11:00 a.m. ( Toronto ... been changed from that previous disclosed. The Meeting will ...
(Date:3/26/2015)... , March 26, 2015 PAREXEL ... global clinical research organization , announced ... definitive agreement to acquire all of the ... a leading provider of specialized pharmacovigilance services, ... the collection, detection, assessment, monitoring, and prevention ...
(Date:3/25/2015)... market is one of the most attractive in the ... plus a growing economy and increasing government investment in ... The Russian market is set to grow at twice ... estimates around 10-15% annually reaching an approximate market value ... Cross Green Cross provides total healthcare solutions ...
Breaking Biology Technology:Investigational New Drug Application for WuXi MedImmune's Monoclonal Antibody Accepted for Review by CFDA 2Investigational New Drug Application for WuXi MedImmune's Monoclonal Antibody Accepted for Review by CFDA 3SQI Diagnostics Inc. Announces Adjournment of Meeting 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 3PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 4
Cached News: