Flash - Life on Earth may date back 3. PARIS (AFP) - Rudimentary life may have existed on Earth 3. Wednesday. A team presented what they say is the oldest- known fossil evidence for life on the Blue Planet - - grains of graphite, a form of carbon, wedged into ancient sedimentary rocks in Labrador, Canada. The previous most ancient life traces were reported in March, from a site in Quebec estimated at between 3.

This is the oldest evidence," Tsuyoshi Komiya of The University of Tokyo insisted in an email exchange with AFP. Our samples are also the oldest supracrustal rocks preserved on Earth" - - a type similar to the formation which contained the Quebec samples. Fossil evidence for early organisms is scarce, and rocks that remain from that period are often poorly preserved. A key difficulty for scientists on a quest to find the oldest life on Earth is proving that organic remains were produced by living organisms rather than geological processes. This field of study is aimed not only at pinpointing the start of life on our planet, but also to shed light on the possibility of life having existed - - or still existing - - on other planets such as Mars. For the new study, Komiya and a team studied graphite, a form of carbon used in pencil lead, in rocks at Saglek Block in Labrador, Canada.

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They measured its isotope composition, the signature of chemical elements, and concluded the graphite was "biogenic" - - meaning it was produced by living organisms. The identity of the organisms, or what they looked like, remains a mystery."We will analyse other isotopes such as nitrogen, sulphur and iron of the organic matter and accompanied minerals to identify the kinds of organisms," said Komiya of the next step."In addition, we can estimate the environment" in which the organisms lived by analysing the chemical composition of the rock itself. If the findings are accurate, it means life took hold on Earth just a geological second after its formation some 4. Before the Quebec fossils, which were also described in Nature, the oldest traces of life were found in Greenland's ice cap and dated to 3.

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Heidi Baker is a rising star in the Prosperity Movement, and she is connected with Bethel Church in Redding, California. She has a global ministry that takes in. Rudimentary life may have existed on Earth 3.95 billion years ago, a time when our infant planet was being bombarded by comets and had hardly any oxygen, researchers. Genre: Action Premise: In an apocalyptic future, a woman rescues the five wives of her insane leader, and tries to take them to her childhood home.

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