Tag

Luca

All articles tagged with #luca

science19 days ago•5 min saved

Amino Acids May Have Arrived Out of Order, Rewriting Life's Origins

A University of Arizona study published in PNAS suggests the first amino acids did not appear in a simple, global sequence as traditionally thought. By analyzing the evolution of protein domains dating to LUCA, researchers find that tryptophan was more common in pre-LUCA life than post-LUCA, implying a more complex and regionally diverse origin of amino acids and a potentially ancient, diverse genetic code. These results challenge established timelines for life's beginnings and hint that amino acids could form in non-Earth environments, widening the search for extraterrestrial life (e.g., Enceladus' subsurface ocean).

via Indian Defence Review|

#aminoacids #geneticcode #luca

science2 months ago•6 min saved

Scientists Discover Earth's Oldest Common Ancestor, Redefining Life's Origins

Scientists have identified the last universal common ancestor (LUCA) of all life on Earth, dating it to around 4.2 billion years ago. LUCA was a complex, cellular organism that thrived in hot, oxygen-free environments using hydrogen-based metabolism and had early immune systems, indicating rapid evolution of life shortly after Earth's formation.

via The Brighter Side of News|

#early-earth #genome-reconstruction #luca

science2 months ago•3 min saved

New Findings Push Back the Origin of Life on Earth by Billions of Years

New research pushes back the timeline of LUCA, the last universal common ancestor, to about 4.2 billion years ago during Earth's Hadean Eon, suggesting life was active and evolving in extreme conditions much earlier than previously thought, with signs of primitive immune systems and environmental interaction.

via Indian Defence Review|

#early-earth #genetic-modeling #hadean-eon

science2 months ago•3 min saved

Earth's Origin Traced to a Single, Ancient Ancestor

A new study suggests that the Last Universal Common Ancestor (LUCA) of all life on Earth existed around 4.2 billion years ago, much earlier than previously thought, and likely had an early immune system, indicating that life was fighting off viruses from its very beginnings.

via Yahoo|

#early-immune-system #earth-history #luca

science4 months ago•3 min saved

Scientists Reconsider Theories on Life's Origins

Scientists are revising their understanding of the emergence of genes and amino acids in early life, suggesting that the traditional model may underestimate the role of certain amino acids like tryptophan and the complexity of early genetic codes, which could have implications for searching for life on other planets like Saturn's moon Enceladus.

via Yahoo|

#amino-acids #astrobiology #early-earth

science4 months ago•3 min saved

Scientists Reconsider the Origin of Life

Scientists are reevaluating the order in which amino acids emerged in the origin of life, suggesting that early protolife may have included a broader range of amino acids than previously thought, which could reshape our understanding of life's beginnings on Earth and potentially elsewhere in the universe.

via Yahoo News Canada|

#amino-acids #astrobiology #early-earth

science6 months ago•3 min saved

Earth's Origin: All Life Descends from a Much Older Common Ancestor

A new study suggests that the Last Universal Common Ancestor (LUCA) of all life on Earth lived around 4.2 billion years ago, shortly after Earth's formation, and likely had an immune system fighting primordial viruses, indicating complex biological features early in life's history.

via yahoo.com|

#early-earth #genetic-research #luca

science6 months ago•3 min saved

Earth's Origin Traced to a Single Ancient Ancestor

A new study suggests that the Last Universal Common Ancestor (LUCA) of all life on Earth lived around 4.2 billion years ago, much earlier than previously thought, and likely had an immune system fighting off viruses, indicating complex biological features early in Earth's history.

via yahoo.com|

#early-earth #genetic-code #luca

science6 months ago•3 min saved

Earth's Origin Traced to a Single Ancient Ancestor

A recent study suggests that the Last Universal Common Ancestor (LUCA) of all life on Earth existed around 4.2 billion years ago, earlier than previously thought, and likely had an immune system fighting primordial viruses, indicating complex biological features early in Earth's history.

via menshealth.com|

#early-earth #genetic-study #luca

science6 months ago•17 min saved

Earth's Life Emerged Rapidly, Faster Than Expected

Recent evidence suggests that life on Earth emerged much faster than previously thought, possibly within a few million years of the planet's formation, challenging the long-held view of a hellish, uninhabitable early Earth and emphasizing the need for open-minded research into the origins of life.

via Aeon|

#early-earth #fossil-record #hadean

science1 year ago•4 min saved

Study Challenges Traditional Understanding of Genetic Code Origins

A study led by Sawsan Wehbi at the University of Arizona suggests that the traditional understanding of genetic code evolution is flawed. The research indicates that early life forms preferred smaller amino acids and those binding to metals, with sulfuric amino acids joining later. This challenges the consensus based on the Urey-Miller experiment and suggests that the genetic code evolved through stages, with earlier codes now extinct. The findings have implications for astrobiology, particularly in sulfur-rich environments like Mars and Europa.

via Phys.org|

#amino-acids #evolution #genetic-code

science1 year ago•4 min saved

LUCA: Earth's 4.2 Billion-Year-Old Ancestor Revealed

A University of Bristol-led study has pinpointed the existence of LUCA (Last Universal Common Ancestor) to about 4.2 billion years ago, revealing it as a complex organism with an early immune system. Through genetic analysis and evolutionary modeling, researchers found that LUCA played a crucial role in early Earth's ecosystems and was already engaged in an arms race with viruses. The study highlights LUCA's complexity and its environmental impact, suggesting that life may flourish on Earth-like biospheres elsewhere in the universe.

via SciTechDaily|

#early-earth #evolution #genetic-analysis

science1 year ago•2 min saved

Life on Earth May Have Begun 4.2 Billion Years Ago, Study Reveals

New research suggests that life on Earth may have begun as early as 4.2 billion years ago, with the Last Universal Common Ancestor (LUCA) emerging shortly after the planet's formation. This complex organism, which had an early immune system, is considered the root of all modern cellular life. The study, published in Nature Ecology & Evolution, used genetic and fossil data to trace LUCA's existence and its role in Earth's early ecosystem.

via Interesting Engineering|

#early-earth #evolution #genetics

entertainment2 years ago•2 min saved

"Plagiarism Controversy: 'The Holdovers' Accused by 'Luca' Writer"

The Holdovers, a film written by David Hemingson and nominated for best original screenplay at the Oscars, is facing accusations of plagiarism from writer Simon Stephenson, known for Luca and Paddington 2. Stephenson claims that The Holdovers bears striking similarities to his unproduced screenplay Frisco, which landed on the Black List in 2013. He has prepared documents comparing scenes and structure, alleging that the entirety of The Holdovers has been copied from Frisco. Representatives for the writers and the WGA have been contacted for comment.

via Hollywood Reporter|

#alexander-payne #entertainment #luca

entertainment2 years ago•1 min saved

Pixar's Turning Red, Soul, and Luca to Hit Theaters in 2024

Pixar's films Soul, Turning Red, and Luca, which initially premiered on Disney Plus due to the pandemic, will be released in theaters in 2024. Soul will screen with the short film Burrow starting January 12th, Turning Red will start screening with the short film Kitbull on February 9th, and Luca will begin screening with the short film For the Birds on March 22nd. Tickets for these special engagement theatrical runs will go on sale on January 2nd, 2024.

via The Verge|

#entertainment #luca #pixar