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News About The Primordial Earth
June 16, 2016
Bacteria perfected protein complexes more than 3.5 billion years ago
Washington DC (SPX) Jun 10, 2016
Researchers are resurrecting ancient bacterial protein complexes to determine how 3.5-billion-year-old cells functioned versus cells of today. Surprisingly, they are not that different, reports a study published June 9 in Cell Chemical Biology. Despite a popular hypothesis that primordial organisms had simple enzyme proteins, evidence suggests that bacteria around 500 million years after life began already had the sophisticated cellular machinery that exists today. Fossils of 3.5-billion-yea ... read more

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Scientists discover oldest plant root stem cells
Scientists at Oxford University have discovered the oldest known population of plant root stem cells in a 320 million-year-old fossil. The cells, which gave rise to the roots of an ancient plant, we ... more
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Antarctic fossils reveal south was not safer during dinosaur extinction
A study of more than 6,000 marine fossils from the Antarctic shows that the mass extinction event that killed the dinosaurs was sudden and just as deadly to life in the polar regions. Previously, sc ... more
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Predation in ancient microbial ecosystems dates back 740M years
Vampires are real, and they've been around for millions of years. At least, the amoebae variety has. So suggests new research from UC Santa Barbara paleobiologist Susannah Porter. Using a scanning e ... more
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Strange sea-dwelling reptile fossil hints at rapid evolution after mass extinction
Two hundred and fifty million years ago, life on earth was in a tail-spin - climate change, volcanic eruptions, and rising sea levels contributed to a mass extinction that makes the death of the din ... more
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How plants conquered the land
Research at the University of Leeds has identified a key gene that assisted the transition of plants from water to the land around 500 million years ago. The ANR gene is required to tolerate 'extrem ... more
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Rice-led study offers new answer to why Earth's atmosphere became oxygenated
Earth scientists from Rice University, Yale University and the University of Tokyo are offering a new answer to the long-standing question of how our planet acquired its oxygenated atmosphere. ... more
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Molecular 'Midwives' Helped Give Birth to RNA
All life on Earth uses DNA to encode and store genes, and to pass them on from one generation to the next. RNA, a close molecular relative of DNA, is used within living cells to carryout a wide vari ... more
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Scientists find 'birthmarks' from Earth's infancy
University of Maryland Professor of Geology Richard Walker and fellow scientists in a multi-institution research team have found two 'birthmarks' within Earth's mantle (the rocky middle layer betwee ... more
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Surviving evidence of Earth's formative years
New work from a team including Carnegie's Hanika Rizo and Richard Carlson, as well as Richard Walker from the University of Maryland, has found material in rock formations that dates back to shortly ... more
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Cosmic dust reveals Earth's ancient atmosphere
Using the oldest fossil micrometeorites - space dust - ever found, Monash University-led research has made a surprising discovery about the chemistry of Earth's atmosphere 2.7 billion years ago. ... more
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Early Earth's air weighed less than half of today's atmosphere
The idea that the young Earth had a thicker atmosphere turns out to be wrong. New research from the University of Washington uses bubbles trapped in 2.7 billion-year-old rocks to show that air at th ... more
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A filter that shaped evolution of primates in Asia
By studying fossils from southern China, scientists have gained insights into how primates in Asia evolved to resemble the array seen today. The results suggest that a distinct period marked by cool ... more
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Endangered venomous mammal predates dinosaurs' extinction
The University of Illinois and University of Puerto Rico have completely sequenced the mitochondrial genome for the Hispaniolan solenodon, filling in the last major branch of placental mammals on th ... more
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New evidence connects dung beetle evolution to dinosaurs
Researchers have found an evolutionary connection between dinosaurs and dung beetles. An international team of scientists uncovered the first molecular evidence indicating that dung beetles evolved ... more
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Trinity scientists reveal origin of Earth's oldest crystals
New research suggests that the very oldest pieces of rock on Earth - zircon crystals - are likely to have formed in the craters left by violent asteroid impacts that peppered our nascent planet, rat ... more
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Geochemical detectives use lab mimicry to look back in time
New work from a research team led by Carnegie's Anat Shahar contains some unexpected findings about iron chemistry under high-pressure conditions, such as those likely found in the Earth's core, whe ... more
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Unique fragment from Earth's formation returns after billions of years in cold storage
In a paper to be published in the journal Science Advances, lead author Karen Meech of the University of Hawai`i's Institute for Astronomy and her colleagues conclude that C/2014 S3 (PANSTARRS) form ... more
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Role of life's timekeeper - a novel theory of animal evolution
This article presents a new theory of animal (metazoan) evolution, suggesting that it was partly mediated through a biochemical oscillator (cycler), named Life's Timekeeper, present in all animal ce ... more
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Fossils may reveal 20-million-year history of penguins in Australia
Multiple dispersals of penguins reached Australia after the continent split from Antarctica, including 'giant penguins' that may have lived there after they went extinct elsewhere, according to a st ... more
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Tiny fossil horses put their back into it
Modern horses are expert runners. They reach top speeds using a special running gait in which they hold their back stiff as they move. A new study reveals that tiny fossil ancestors of modern horses ... more
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Mammal-like reptile survived much longer than thought
Teeth can reveal a lot, such as how the earliest mammals lived with their neighbors. Researchers have uncovered dozens of fossilized teeth in Kuwajima, Japan and identified this as a new species of ... more
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How and why single cell organisms evolved into multicellular life
Throughout the history of life on Earth, multicellular life evolved from single cells numerous times, but explaining how this happened is one of the major evolutionary puzzles of our time. However, ... more
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Study shows dinosaur families chose to exit Europe
Researchers have used 'network theory' for the first time to visually depict the movement of dinosaurs around the world during the Mesozoic Era - including a curious exodus from Europe. The re ... more
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Missing links brewed in primordial puddles
The crucibles that bore out early building blocks of life may have been, in many cases, modest puddles. Now, researchers working with that hypothesis have achieved a significant advancement toward u ... more
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