A team at Ludwig-Maximilians-Universität München shows that temperature gradients in pore systems promote cyclical replication and emergence of nucleic acids. The researchers demonstrate a setting where pore systems on the seafloor, heated by volcanic activity, can serve as reaction chambers for RNA synthesis.
Researchers used microscopic fossils to date sedimentary layers and shed light on the origin of the Canary Islands. The study supports the mantle plume model, suggesting oceanic volcanoes formed from an anomalously hot plume of molten rock from the Earth's mantle.
Research suggests asteroid material originated from impacts between embryo planets, resolving long-standing mystery of chondrule formation. Chondrules are abundant in meteorites and similar to spherules formed by impact on Earth and moon.
The study provides comprehensive tracking of maize origin in the Southwest, showing it entered via highland route around 4,100 years ago and later via coastal route about 2,000 years ago. Researchers also identified genes responsible for adaptation to drought and changes in starch composition.
Researchers have solved the mystery of the theta aurora by studying data from the European Space Agency's Cluster and NASA's IMAGE satellites. The study found that the plasma trapping mechanism is responsible for the phenomenon, which occurs when the interplanetary magnetic field points northwards.
Scientists have explained the origin of theta auroras, a type of high-latitude aurora that was unclear until now. The mysterious phenomenon is linked to hot plasma in the magnetosphere, caused by magnetic reconnection and funneled into near-Earth space from the sun.
A comprehensive genetic study found that more patients with ALS have a genetic origin than previously believed. Patients with mutations in multiple genes experience earlier disease onset. The study suggests that genetics may play a larger role in ALS, potentially affecting over one-third of all cases.
Fibrotic diseases cause up to 45 percent of deaths worldwide. Researchers identified Gli1 cells around blood vessels as responsible for fibrosis. Abating these cells improved organ function in mice with kidney and cardiac fibrosis.
A new study suggests that organic carbon traces found in a Martian meteorite may have originated from biological sources. The researchers argue that the carbon content was deposited in the meteorite's fissures before it left Mars, and its isotopic ratio is consistent with biological origin.
A Johns Hopkins University-led team has discovered a rich variety of organic carbon species in deep fluids, suggesting they could spark the formation of diamonds and potentially become food for microbial life. These findings, published in Nature Geoscience, provide new insights into the Earth's mantle and its role in the origin of life.
Researchers at Scripps Research Institute have devised an enzyme with unique properties that may have contributed to the origin of life on Earth. The new ribozyme works by knitting together a 'copy' strand of RNA using an original template, with the ability to make copies of its own left-hand mirror image.
Researchers from the University of Southern Denmark discover information strings with peculiar properties that can replicate quickly and efficiently, leading to a self-organizing autocatalytic network. This mechanism has potential value for developing technology based on living processes, such as self-healing devices.
A new study by the University of Virginia challenges two current theories on how simple bacterial cells became mitochondria, proposing that they were initially parasitic. The research uses next-generation DNA sequencing technologies to decode the genomes of 18 bacteria close relatives of mitochondria.
A new study shows that consumers won't judge products by their country of origin if the products are well-made. Consumers consider a country's reputation when evaluating its products, but this doesn't mean negative stereotypes always harm business. Instead, countries with poor reputations can promote superior product features to succeed
Researchers from CNIO have identified a new marker for cancer stem cells using riboflavin, a pigment that emits green fluorescence. This discovery enables the tracking of cancer stem cells in tumors, which are responsible for chemical resistance and tumor growth.
Researchers find that geographic isolation is more often due to bird movements across physical barriers, suggesting a generalizable explanation for speciation initiation. The study also highlights the importance of prolonged landscape stability and human alterations in killing the speciation process.
Research suggests that ancient synapsid relatives, including the famous Dimetrodon, had eyes best suited for low-light conditions at night, 100 million years before the evolution of modern mammals. The findings indicate that nocturnal activity may have evolved in some synapsids as early as 300 million years ago.
A single nucleotide change in the FMR1 gene near its replication origin may cause fragile X syndrome by inactivating DNA replication. This substitution leads to increased risk of repeat expansions, resulting in intellectual disability.
Researchers analyzed seven grains of possible interstellar dust, finding they are more complex in composition and structure than previously imagined. The analysis opens a door to studying the origins of the solar system and possibly the origin of life itself.
A comprehensive analysis of data from thousands of patients revealed that one in ten cancers would be classified differently using a new classification system based on molecular subtypes. The study provides a more refined, quantitative picture of cancer subtypes and could lead to different treatment options for those patients.
Researchers at the University of East Anglia have found that cells in plants, yeast, and animals continue to perform reactions thought to be responsible for life's origin four billion years ago. These reactions involve iron, sulfur, and electro-chemistry, essential for functions like respiration and photosynthesis.
A groundbreaking study by Harvard University researchers shows that orb-weaver spiders do not share a single origin, contrary to long-held popular opinion. The study's findings suggest that the orb web evolved independently in two groups of spiders, with distinct behaviors and silk characteristics.
Certain cancers have a characteristic age at which they occur, and their incidence decreases beyond that age. This 'developmental origin of disease hypothesis' suggests many cancers originate early in life, possibly before birth.
A team of scientists has identified a master regulatory gene for sex determination in the green alga Volvox carteri, which shows how it evolved from a more primitive mating system in a close relative. The discovery may provide a possible blueprint for the origin of sexes in other multicellular organisms.
Researchers model primordial ribosomes using modern structures, showing how new structures were added to the surface without altering the core. The study reveals the universal biology of translation, with distinct fingerprints in ribosomes across species.
A new genetic 'barcode' for malaria parasites has been found, enabling the tracking and containment of disease spread. The barcode can identify the geographic origin of infections and monitor the spread of drug-resistant parasites.
Researchers from Oregon State University have identified the ancestral home of Phytophthora infestans, a costly and deadly plant disease that causes potato late blight. The discovery provides new avenues to discover resistance genes and helps explain the mechanisms of repeated emergence of this disease.
Researchers analyzed nearly 3,000 cod bones from 95 excavations in and around London, identifying a sudden change in the origin of the fish during the early 13th century. This shift indicates the onset of a large-scale import trade, revolutionizing the local fishing industry.
A team of researchers has developed a tool to accurately identify the biogeography of worldwide individuals using genetic distribution and geographical distance. This method, called GPS, is sensitive and specific, allowing it to identify place of origin even in ethnically diverse regions like the US.
A reconstructed ancient ocean revealed spontaneous chemical reactions that could have produced crucial organic molecules for life. These findings suggest that primitive cells may have synthesized their own metabolic components without the aid of enzymes, challenging the traditional view on the origin of life.
Researchers reconstructed ancient ocean chemistry and found spontaneous occurrence of reaction sequences enabling metabolite formation. These findings suggest that metabolism predates the origin of life and evolved through early ocean conditions.
An international team of researchers, led by a plant scientist at the University of California, Davis, reports that the domesticated chili pepper originated in central-east Mexico. The region, extending from southern Puebla and northern Oaxaca to southeastern Veracruz, was previously thought to be less suitable for the crop's origins.
A new analysis by NASA-funded researchers suggests that vitamin B3 could have originated from carbon-rich meteorites. The team found high levels of vitamin B3 and related molecules in eight different meteorites, which support the theory that extraterrestrial sources may have assisted the origin of life.
Researchers have uncovered new seismic data for the Slate Range in California, revealing a change in faulting style around four million years ago. In another study, scientists linked zircon ages to oxygen isotopic correlations between two tephra deposits in the southwestern United States.
A University of Calgary-led study has found that the majority of sand in Alberta's oilsands came from the Appalachian region on eastern North America. Researchers used a technique called detrital zircon uranium-lead geochronology to determine the age of individual sediment grains, revealing a range of ages from 300 to 2,800 million yea...
A recent study reveals that the genetic disease ARVC is more widespread than initially assumed, with all known affected families sharing a common genetic origin. The mutation was first identified in Canada and has since been found in European countries including Germany, Denmark, and the USA, indicating a shared European heritage.
University of Michigan researchers have created 'living' rotating crystals by making nanoparticles spin, which could shed light on the origin of life. The self-organizing behavior of the particles forms phase separation without direct attraction.
A study of a sea sponge reveals that complex life can survive with extremely low oxygen levels, challenging the long-held theory that high oxygen levels were necessary for animal evolution. This finding suggests alternative ecological and evolutionary mechanisms may have played a role in the origin of animals.
Researchers at the University of Warwick have detected and sequenced an ancient RNA genome of Barley Stripe Mosaic Virus in a 750-year-old barley grain found in modern-day Egypt. The study pushes back the origin of the virus to at least 2,000 years and reveals how intense farming during the Crusades contributed to its spread.
Lorena Moscardelli presents a terrestrial, deep-water analogy to support the existence of an ancient Martian ocean. She documents boulder-size rocks on Mars' northern plains that are similar to blocks transported by subaqueous mass-transport events in Earth's deep water environments.
Researchers found amino acids and biologically important molecules in carbon-rich meteorites, suggesting that extraterrestrial material may have played a role in the origin of life. The new technique allows for analysis of tiny samples, enabling future studies on cometary particles and sample-return missions.
Researchers discovered that breast stem cells and their 'daughters' have a much longer lifespan than previously thought, actively maintaining breast tissue throughout life. This finding has implications for identifying the cells of origin of breast cancers and developing new treatment strategies.
Researchers at the Georgia Institute of Technology and NASA have developed a simplified approach to the Miller-Urey experiment, which aims to recreate the conditions under which organic molecules could have formed on early Earth. The study successfully forms amino acids, building blocks of life, under primitive Earth conditions.
The study sheds light on the genetic overlap between modern dogs and wolves, suggesting interbreeding after dog domestication. Dogs are more closely related to each other than wolves, regardless of geographic origin, indicating a shared ancestry that diverged in recent past.
New fossils from Belgium have revealed the earliest known ancestor of modern carnivores, with species such as lions, tigers and bears tracing their ancestry to primitive carnivorous mammals. The new specimens, including over 250 teeth and ankle bones, provide valuable insights into the evolutionary history of these iconic animals.
Researchers will investigate global practices and principles of life imprisonment, aiming to make recommendations on its application. The study will focus on human rights, conditions of service, and the controversial question of irreducible life sentences.
New research reveals that residents of poorer nations report having greater meaning in life, contrary to the notion that wealthier nations are happier. Higher religiosity is believed to play a crucial role in this phenomenon, providing people with a sense of purpose and structure in their lives.
A new analysis of Hadean mineralogy suggests that no more than 420 different minerals were present at or near Earth's surface during the first 550 million years after life emerged. These minerals formed from magma and alteration, excluding rare elements such as borate and molybdate minerals.
Researchers find RNA, not protein, catalyzes eukaryotic gene splicing, increasing complexity in higher organisms. This discovery enriches the 'RNA world' origin hypothesis, suggesting life on earth began with RNA-based systems.
The SwRI-led ISET team will study the origin, evolution, and physical properties of near-Earth asteroids and their moons, aiming to better understand their potential for cost-effective human exploration. The research will also investigate minimoons, small bodies with the potential to provide insights into the history of the Solar System.
A team of scientists isolated a live virus from horseshoe bats in China, confirming them as the origin of the SARS-CoV. The discovery will help governments design effective prevention strategies for similar epidemics.
Researchers tracked lethal prostate cancer to determine the clonal origin of a patient's deadly disease. Using tissue samples, they identified the primary tumor site of the lethal clone, revealing that it originated from a small, low-grade foci rather than the larger high-grade region.
Researchers studied vanadium dioxide using ALS beamline 4.0.2 to investigate the origin of its metal-insulator transition, which could lead to faster and more energy-efficient electronic devices. The study identified roles for Pi-symmetry and delta-symmetry electron orbitals in controlling the transition.
Researchers identify Chinese strain as origin of emerging US swine virus with high mortality rates, emphasizing the need for strict biosecurity and sanitation procedures on farms. The study found that the US strains share 99.5% of their genetic code with their Chinese counterpart, indicating a possible evolutionary origin from bats.
Scientists have re-examined the evolutionary origin of our skeleton and discovered that it originated from the armor of mud-slurping ancestors. The study found that conodonts evolved tooth-like structures within their own lineage, rather than inheriting them from a common ancestor with other vertebrates.
Researchers at Memorial Sloan-Kettering Cancer Center developed a new approach for cancer therapy development using tumor genomic signatures. The study confirms two major hypotheses, showing that a limited number of genetic events cause most tumor subtypes and that oncogenic signatures are largely independent of tissue origin.
A new study reveals a 'cascade of events' triggered an early sea level rise, driving animal diversity and innovation during the Cambrian period. The explosion led to the origin of modern ecosystems, skeletons, and specialized modes of life.
Recent research from the Cassini-Huygens mission provides insights into the evolution of life on Earth from Titan, Saturn's moon. The findings shed light on the origin of life and the potential for life beyond Earth, with organic chemicals present on Titan's surface being influenced by sunlight and energy sources.
New research presents evidence suggesting that life may have originated on Mars and was brought to Earth via a Martian meteorite. The study tackles two paradoxes related to the origin of life on Earth, including the 'tar paradox' and the difficulty in starting life due to water coverage.
Researchers found a genetic match for MERS in an Egyptian Tomb Bat near the first known case of the disease in Saudi Arabia, pointing to bats as the likely animal origin. The study suggests that an intermediary animal may also be involved in human transmission.