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environmental-oxygen-triggers-loss-of-webbed-digits

Environmental oxygen triggers loss of webbed digits

African clawed frog (stock image). Credit: © Nathan / Adobe Stock Free fingers have many obvious advantages on land, such as in locomotion and grasping, while webbed fingers are typical of aquatic or gliding animals. But both amphibians and amniotes -- which include mammals, reptiles, and birds -- can have webbed digits. In new research…

Lifestyle is a threat to gut bacteria: Ötzi proves it, study shows

Intestinal bacteria illustration (stock image). Credit: © nobeastsofierce / Adobe Stock The intestinal microbiome is a delicate ecosystem made up of billions and billions of microorganisms, bacteria in particular, that support our immune system, protect us from viruses and pathogens, and help us absorb nutrients and produce energy. The industrialization process in Western countries had…
ancient-stars-shed-light-on-earth’s-similarities-to-other-planets

Ancient stars shed light on Earth’s similarities to other planets

Exoplanets illustration; elements furnished by NASA (stock image). Credit: © Vadimsadovski / Adobe Stock Earth-like planets may be common in the universe, a new UCLA study implies. The team of astrophysicists and geochemists presents new evidence that the Earth is not unique. The study was published in the journal Science on Oct. 18. "We have…

Hubble observes first confirmed interstellar comet

Hubble photographed comet 2I/Borisov at a distance of 260 million miles from Earth. This Hubble image, taken on Oct. 12, 2019, is the sharpest view to date of the comet. Hubble reveals a central concentration of dust around the nucleus (which is too small to be seen by Hubble). The comet is falling toward the…
lifestyle-is-a-threat-to-gut-bacteria:-otzi-proves-it,-study-shows

Lifestyle is a threat to gut bacteria: Ötzi proves it, study shows

Intestinal bacteria illustration (stock image). Credit: © nobeastsofierce / Adobe Stock The intestinal microbiome is a delicate ecosystem made up of billions and billions of microorganisms, bacteria in particular, that support our immune system, protect us from viruses and pathogens, and help us absorb nutrients and produce energy. The industrialization process in Western countries had…
in-a-first,-scientists-pinpoint-neural-activity’s-role-in-human-longevity

In a first, scientists pinpoint neural activity’s role in human longevity

Roundworm Caenorhabditis elegans (stock image). Credit: © heitipaves / Adobe Stock The brain's neural activity -- long implicated in disorders ranging from dementia to epilepsy -- also plays a role in human aging and life span, according to research led by scientists in the Blavatnik Institute at Harvard Medical School. The study, published Oct. 16…
scientists-find-early-humans-moved-through-mediterranean-earlier-than-believed

Scientists find early humans moved through Mediterranean earlier than believed

Map of Greek islands in the Aegean Sea showing Naxos in the center (stock image). Credit: © lesniewski / Adobe Stock An international research team led by scientists from McMaster University has unearthed new evidence in Greece proving that the island of Naxos was inhabited by Neanderthals and earlier humans at least 200,000 years ago,…

Hubble observes first confirmed interstellar comet

Hubble photographed comet 2I/Borisov at a distance of 260 million miles from Earth. This Hubble image, taken on Oct. 12, 2019, is the sharpest view to date of the comet. Hubble reveals a central concentration of dust around the nucleus (which is too small to be seen by Hubble). The comet is falling toward the…
black-holes-stunt-growth-of-dwarf-galaxies

Black holes stunt growth of dwarf galaxies

Black hole illustration (stock image). Credit: © vchalup / Adobe Stock Astronomers at the University of California, Riverside, have discovered that powerful winds driven by supermassive black holes in the centers of dwarf galaxies have a significant impact on the evolution of these galaxies by suppressing star formation. Dwarf galaxies are small galaxies that contain…
how-mucus-tames-microbes

How mucus tames microbes

Illustration of bacterium Pseudomonas aeruginosa (stock image). Credit: © Kateryna_Kon / Adobe Stock More than 200 square meters of our bodies -- including the digestive tract, lungs, and urinary tract -- are lined with mucus. In recent years, scientists have found some evidence that mucus is not just a physical barrier that traps bacteria and…
prehistoric-humans-ate-bone-marrow-like-canned-soup-400,000-years-ago

Prehistoric humans ate bone marrow like canned soup 400,000 years ago

Illustration of prehistoric human with animal skeleton (stock image). Credit: © Kovalenko I / Adobe Stock Tel Aviv University researchers, in collaboration with scholars from Spain, have uncovered evidence of the storage and delayed consumption of animal bone marrow at Qesem Cave near Tel Aviv, the site of many major discoveries from the late Lower…

Prehistoric humans ate bone marrow like canned soup 400,000 years ago

Illustration of prehistoric human with animal skeleton (stock image). Credit: © Kovalenko I / Adobe Stock Tel Aviv University researchers, in collaboration with scholars from Spain, have uncovered evidence of the storage and delayed consumption of animal bone marrow at Qesem Cave near Tel Aviv, the site of many major discoveries from the late Lower…

Prehistoric humans ate bone marrow like canned soup 400,000 years ago

Illustration of prehistoric human with animal skeleton (stock image). Credit: © Kovalenko I / Adobe Stock Tel Aviv University researchers, in collaboration with scholars from Spain, have uncovered evidence of the storage and delayed consumption of animal bone marrow at Qesem Cave near Tel Aviv, the site of many major discoveries from the late Lower…
koala-epidemic-provides-lesson-in-how-dna-protects-itself-from-viruses

Koala epidemic provides lesson in how DNA protects itself from viruses

Koala (stock image). Credit: © rueangrit / Adobe Stock In animals, infections are fought by the immune system. Studies on an unusual virus infecting wild koalas, by a team of researchers from the University of Massachusetts Medical School and the University of Queensland, reveal a new form of "genome immunity." The study appears October 10…
new-cancer-driving-mutation-in-‘dark-matter’-of-the-cancer-genome

New cancer-driving mutation in ‘dark matter’ of the cancer genome

DNA illustration (stock image). Credit: © Giovanni Cancemi / Adobe Stock An Ontario-led research group has discovered a novel cancer-driving mutation in the vast non-coding regions of the human cancer genome, also known as the "dark matter" of human cancer DNA. The mutation, as described in two related studies published in Nature on October 9,…
humans-have-salamander-like-ability-to-regrow-cartilage-in-joints

Humans have salamander-like ability to regrow cartilage in joints

Salamander (stock image). Credit: © Alexander Limbach / Adobe Stock Contrary to popular belief, cartilage in human joints can repair itself through a process similar to that used by creatures such as salamanders and zebrafish to regenerate limbs, researchers at Duke Health found. Publishing online Oct. 9 in the journal Science Advances, the researchers identified…
ice-on-lunar-south-pole-may-have-more-than-one-source

Ice on lunar south pole may have more than one source

The Lunar Reconnaissance Orbiter captured these views of the Lunar South Pole. Credit: NASA/Scientific Visualization Studio The discovery of ice deposits in craters scattered across the Moon's south pole has helped to renew interest in exploring the lunar surface, but no one is sure exactly when or how that ice got there. A new study…

Dog ownership associated with longer life, especially among heart attack and stroke survivors

Portuguese water dog. Owning a dog may be associated with having a longer life. Credit: Copyright Michele Hogan Dog ownership may be associated with longer life and better cardiovascular outcomes, especially for heart attack and stroke survivors who live alone, according to a new study and a separate meta-analysis published in Circulation: Cardiovascular Quality and…
nobel-prize-in-chemistry-2019:-lithium-ion-batteries

Nobel Prize in Chemistry 2019: Lithium-ion batteries

Lithium-ion batteries concept (stock image). Credit: © malp / Adobe Stock The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Chemistry 2019 to John B. Goodenough, of The University of Texas at Austin, USA, M. Stanley Whittingham, of Binghamton University, State University of New York, USA, and Akira Yoshino of…

Dog ownership associated with longer life, especially among heart attack and stroke survivors

Portuguese water dog. Owning a dog may be associated with having a longer life. Credit: Copyright Michele Hogan Dog ownership may be associated with longer life and better cardiovascular outcomes, especially for heart attack and stroke survivors who live alone, according to a new study and a separate meta-analysis published in Circulation: Cardiovascular Quality and…

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