Navigation Links
Stem cells grown in lab mirror normal developmental steps

Assistant Professor Mark Pagani in the Department of Geology and Geophysics at Yale and his colleagues mapped the first detailed history of atmospheric carbon dioxide between 45 - 25 million years ago based on stable isotopes of carbon in a National Science Foundation study reported in Science Express.

"Through the energy we consume, each of us makes a contribution to increasing greenhouse gasses, such as carbon dioxide and methane, in the Earth's atmosphere," said Pagani. "To understand the implications of these actions for the future, scientists look to the past to gain a better understanding of Earth's climate system under high greenhouse gas conditions." The findings were based on calibration of carbon-containing compounds produced by ancient sea surface algae that were recently isolated in deep sea drill cores.

The data indicates that between 45 - 34 million years ago the atmospheric carbon dioxide level was up to five times greater than today, with a sharp decrease and then stabilization to near modern day levels between 34 - 25 million years ago.

During the early part of the Paleogene Period, from 65 - 34 million years ago, global climates were much warmer than today with very little ice present at the poles. The boundary of the Oligocene and Eocene Epochs 33.7 million years ago was marked by rapid global cooling and the formation of large continental ice sheets on the Antarctic.

"Before this study, the relationship between the global climate and the concentration of carbon dioxide in the atmosphere during the late Eocene and Oligocene was largely unknown," said Pagani, who is recognized for his reconstruction of past atmospheric carbon dioxide levels between 25 million and eight million years ago.

They also present intriguing evidence that the sharp drop in carbon dioxide level, between 33 - 25 million years ago, prompted the origin of economically important land plants that are sensitive to atmospheric carbon dioxide l
'"/>

Source:


Page: 1 2

Related biology news :

1. Wisconsin scientists grow critical nerve cells
2. Spleen may be source of versatile stem cells
3. Researchers discover way to make cells in the eye sensitive to light
4. Priming embryonic stem cells to fulfill their promise
5. Lack of enzyme turns fat cells into fat burners
6. Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas
7. Elusive HIV shape change revealed; Key clue to how virus infects cells
8. Mouse brain cells rapidly recover after Alzheimers plaques are cleared
9. Enzyme allows B cells to resist death, leading to leukemia
10. Scientists rid stem cell culture of key animal cells
11. Genetically modified natural killer immune cells attack, kill leukemia cells
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Stem cells grown lab mirror normal developmental steps

(Date:7/30/2014)... uses reversible epigenetic processes to regulate its genes, and ... a picture of the genome regulation taking place in ... Genome Biology and illustrates how the truffle ... genes,. The authors say this may shed light on ... Black truffles (Tuber melanosporum), also known as Prigord truffles, ...
(Date:7/30/2014)... and tended her eggs until they hatched 4.5 years ... in the open-access journal PLOS ONE by ... colleagues. , Octopuses typically have a single reproductive period ... care of their fertilized eggs until they hatch. Shallow-water ... 3 months, but little is known about the brooding ...
(Date:7/30/2014)... Scientists studying the potential effects of climate change ... focusing on the wrong factors, according to a ... Wildlife Conservation Society, University of Queensland, and other ... conservation science is missing the point when it ... majority of climate change scientists focus on the ...
Breaking Biology News(10 mins):How black truffles deal with the jumpers in their genome 2Deep-sea octopus has longest-known egg-brooding period 2Conservation scientists asking wrong questions on climate change impacts on wildlife 2
... DC May 18, 2010 -- The American Society for ... , a new open access online journal designed to make ... is on rapid publication of cutting-edge research spanning the entire ... "The microbial world is a highly interconnected one in which ...
... provide visible and infrared imagery of Iceland,s Eyjafjallajokull Volcano ... plume being pulled in a northeasterly direction over the ... pushed to the northeast from a low pressure area ... or MODIS instrument that flies aboard Terra captured an ...
... Greenland is situated in the Atlantic Ocean to the ... coast formed by moving glaciers, and a dense icecap up ... down the land beneath and lowering its elevation. Now, scientists ... so quickly that the land underneath is rising at an ...
Cached Biology News:ASM launches new open access journal 2Greenland rapidly rising as ice melt continues 2
(Date:7/31/2014)... , July 31, 2014 Research ... "Global Genomics Market 2014-2018" report to their ... Genomics is the study of the genetic material ... be a strong basis for the discovery and development ... human diseases or health conditions. Genomics is supported by ...
(Date:7/31/2014)... July 31, 2014 Held at the ... with an overview of the disease and its treatment. ... side effects, as well as updates on the state-of-the-art ... Dr. Sandy Srinivas for organizing this educational opportunity,” says ... cancer. “Sandy and her colleagues have put together a ...
(Date:7/31/2014)...   BioLife Solutions , Inc. (NASDAQ: ... proprietary clinical grade hypothermic storage and ... products for cells and tissues, today announced today ... be released on Thursday, August 7, 2014, and that ... webcast at 4:30 p.m. ET that afternoon. Management will ...
(Date:7/30/2014)... , July 30, 2014 Regulus Therapeutics ... company leading the discovery and development of innovative medicines ... results and highlights for the quarter ended June 30, ... financial markets close. Regulus will host ... 2014, at 5:00 pm Eastern Daylight Time to discuss ...
Breaking Biology Technology:Global Genomics Market 2014-2018: Key Vendors are F. Hoffmann-La Roche, Life Technologies, Qiagen and Illumina 2BioLife Solutions to Report Financial Results for Second Quarter 2014 and Provide Business Update on August 7, 2014 2Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 2Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 3
... UPPSALA, Sweden, October 5 , ... - At One Sixth the Price of QuanTyper(TM) Without Loss of ... Rapidly Penetrate the Market , AlphaHelix (Ticker: ... AmpXpress(TM) - to meet demands for lower,instrument prices. This was made ...
... Inc. (Nasdaq: ONTY ) (TSX: ONY) today announced ... Officer of ZymoGenetics, Inc. (Nasdaq: ZGEN), to its board ... to our board of directors and look forward to ... experience in drug development, research and operations will be ...
... , BASKING RIDGE, N.J., Oct. 5 Regado Biosciences, ... aptamers with active control agents, announced today that David ... be presenting at the Japan Biopharma Conference 2009 at ... presentation is scheduled for 2:40pm (GMT +9:00) on October ...
Cached Biology Technology:AlphaHelix Presents AmpXpress(TM) at the BIOTECHNICA Show 2Oncothyreon announces appointment of Douglas E. Williams, Ph.D., to board of directors 2Regado Biosciences To Present at the 2009 Japan Biopharma Partnering Conference on October 6, 2009 2
... The Model 1575 immunowash microplate washer, 100-240 ... that have flat-, U-, or V-bottom wells. ... vertical needle positions to an accuracy of ... and overflow washing. It can store up ...
... is a compact benchtop and stackable ... controller with a large display screen ... speed. Air circulation inside to evenly ... can be easily calibrated from the ...
... Incubator is a compact benchtop and ... microprocessor controller with a large display ... agitation speed. Air circulation inside to ... Temperature can be easily calibrated from ...
... Biotin label transfer is fast emerging ... interaction discovery and confirmation. Until now, only ... targeted with label transfer reagents such as ... chain analog, Mts-Atf-LC-Biotin, are exciting additions to ...
Biology Products: