Navigation Links
UCLA scientists strengthen case for life more than 3.8 billion years ago

ith UCLA's high-resolution ion microprobe--an instrument that enables scientists to learn the exact composition of samples. The microprobe shoots a beam of ions, or charged atoms, at a sample, releasing from the sample its own ions, which are then analyzed in a mass spectrometer. Scientists can aim the beam of ions at specific microscopic areas of a sample and analyze them.

While critics noted there are ways to make light carbon in the absence of life, Harrison considers those possibilities to be "extremely unlikely," especially in light of another discovery of rocks in Western Greenland, not far away, of the same age, and a similar ratio of 12C to 13C.

The scientists see light carbon inclusions in a phosphate mineral called apatite, which is also the material of which bones and teeth are made.

The form of life the researchers believe they have discovered was probably a simple microorganism, although its actual shape or nature cannot be ascertained, Mojzsis said, because heat and pressure over time have destroyed any original physical structure of the organisms.

Harrison said of UCLA's ion microprobe and the research: "The individual samples are very small, and no other instrument would have been sensitive enough to reveal precisely the isotopic composition and location of the carbon inclusions in the rock."

It is unknown when life first appeared on Earth, which is approximately 4.5 billion years old.

The residue of ancient life that the scientists believe they have found existed prior to the end of the "late heavy bombardment" of the Moon by large objects, a period which ended approximately 3.8 billion years ago, Harrison noted.

"Life is tenacious, and it completely permeates the surface layer of the planet," Mojzsis said. "We find life beneath the deepest ocean, on the highest mountain, in the driest desert and the coldest glacier, and deep down in the crustal rocks and sediments."

An unanswe
'"/>

Source:University of California - Los Angeles


Page: 1 2 3 4 5

Related biology news :

1. Wisconsin scientists grow critical nerve cells
2. UCSB scientists probe sea floor venting to gain understanding of early life on Earth
3. UAB scientists discover the origin of a mysterious physical force
4. Fox Chase Cancer Center scientists identify immune-system mutation
5. Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.
6. U-M scientists find genes that control growth of common skin cancer
7. UCLA scientists transform HIV into cancer-seeking missile
8. RNA project to create language for scientists worldwide
9. Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals
10. To control germs, scientists deploy tiny agents provocateurs
11. Leprosy microbes lead scientists to immune discovery
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: UCLA scientists strengthen case for life more than billion years ago

(Date:4/8/2015)...  Infinisource, a leading provider of SaaS-based Human Capital ... leading supplier of biometric identification and security solutions, ... advanced biometrically-enabled time clock, the companies announced today. ... setting a bold, new standard for the collection ... and mid-size employer. When connected to the iSolved ...
(Date:4/2/2015)... According to preliminary estimates Fingerprint ... higher than 125 MSEK. This exceeds the guidance provided ... revenues for Q1 2015 would be in line with ... 2014. The operating result for the first quarter is ... report will as previously communicated be published on May ...
(Date:3/31/2015)... 2015  Elephant Talk Communications Corp. (NYSE MKT: ETAK) ... Software Defined Network Architecture (ET Software DNA® 2.0) platforms ... approximately $20.4 million for the year ended December 31, ... the year ended December 31, 2013. ... completed its multi-year transition away from its legacy landline ...
Breaking Biology News(10 mins):iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 3Fingerprint Cards Revises Revenues for Q1 2015 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6
... Measuring Energetics and Behaviour Using Accelerometry in Cane Toads ... Bufo marinus were introduced to Australia as a ... and damage new habitats they enter. Predictive models that can ... ground distribution could help to maximise control efficiency but to ...
... Cell biologist Daniel Gottschling, Ph.D., a member of the ... has been elected to membership in the American Academy ... nation,s oldest and most prestigious honorary societies and independent ... the molecular underpinnings of life clues that he ...
... NY, April 21, 2010 In recognition of Earth Day,s ... ) will provide complimentary online access to its journals ... Journal of Record; Environmental Justice; and Ecopsychology ... information about sustainability initiatives, the relationship between mankind and ...
Cached Biology News:Cane toad accelerometry and more 2Cane toad accelerometry and more 3Cane toad accelerometry and more 4Cane toad accelerometry and more 5Cane toad accelerometry and more 6Cell biologist Daniel Gottschling elected to American Academy of Arts & Sciences 2Expert commentary on Earth Day's 40th anniversary 2
(Date:5/5/2015)... May 5, 2015  Blueprint Medicines (NASDAQ: ... initial public offering of 9,367,708 shares of common ... per share, including shares of common stock issued ... their option to purchase additional shares. The gross ... Medicines were approximately $168.6 million, before underwriting discounts and ...
(Date:5/5/2015)... , May 5, 2015 Roka Bioscience, Inc. ... providing advanced testing solutions for the detection of foodborne pathogens, ... at the Bank of America Merrill Lynch 2015 Health Care ... be held at Encore at the Wynn, Las ... of the presentation will be available through the investor relations ...
(Date:5/5/2015)... Poway, CA (PRWEB) May 05, 2015 ... Pall Life Science Animal Health, Jeffrey Schaffer, DVM, ... , “With over 15 years of experience in ... be a great addition to our veterinarian lead ... Commercial Officer, explains. “Dr. Schaffer will be responsible ...
(Date:5/5/2015)... DUBLIN , May 05, 2015 /PRNewswire/ ... ) has announced the addition of the ... report to their offering. Macromolecules ... acids undergo separation or are broken into ... biotechnological products. This separation requires various advanced ...
Breaking Biology Technology:Blueprint Medicines Announces Closing of Initial Public Offering 2Leading Regenerative Veterinary Medicine Company, VetStem Biopharma announces the addition of Dr Jeffrey Schaffer as the Director of Veterinary Professional Services. 2Global Separation Systems Market in Biotechnology 2015-2019 - Trends and Forecasts for the $28 Billion Market 2
... Biosciences,Incorporated (Nasdaq: KOSN ) today announced that ... as Chief Executive Officer, effectively immediately.,Ms. Kim joined ... and Chief,Business Officer, and was appointed President in ... of the Board, commented: "We,believe that Helen possesses ...
... and,the president of one of the area,s major ... Committee as winners of the region,s third,bioscience award ... Region Bioscience Awards are:, -- Best New ... CEO, CSA,Medical, Inc. Askew,s very young Baltimore-based company ...
... Study Successfully Hit Primary End Point of ... Toward Superiority over the Market Leader, ... (NASDAQ: ANPI , TSX: ANP), a ... today that the clinical data from its ...
Cached Biology Technology:Kosan's Board of Directors Appoints Helen S. Kim as Chief Executive Officer 2Kosan's Board of Directors Appoints Helen S. Kim as Chief Executive Officer 3Kosan's Board of Directors Appoints Helen S. Kim as Chief Executive Officer 4Three CEOs and University President Named Winners of Greater Baltimore Committee's 2008 Baltimore Region Bioscience Awards 2960-Patient Study Demonstrates Zero Blood Stream Infection In Patients Treated With Angiotech's Novel 5-FU Central Venous Catheter 2960-Patient Study Demonstrates Zero Blood Stream Infection In Patients Treated With Angiotech's Novel 5-FU Central Venous Catheter 3960-Patient Study Demonstrates Zero Blood Stream Infection In Patients Treated With Angiotech's Novel 5-FU Central Venous Catheter 4960-Patient Study Demonstrates Zero Blood Stream Infection In Patients Treated With Angiotech's Novel 5-FU Central Venous Catheter 5960-Patient Study Demonstrates Zero Blood Stream Infection In Patients Treated With Angiotech's Novel 5-FU Central Venous Catheter 6960-Patient Study Demonstrates Zero Blood Stream Infection In Patients Treated With Angiotech's Novel 5-FU Central Venous Catheter 7
RABBIT ANTI ISOCITRATE DEHYDROGENASE...
Recombinant Equine TNF-alpha/TNFSF1A, CF...
Recombinant Feline IL-2, CF...
... Fernandez and G. Butcher (1998). • The ... much research in the immunology area. There ... MHC proteins and in their function as ... faced with the prospect of tackling biochemical ...
Biology Products: