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Popular science reporting on human biology, health, and the science behind performance and longevity.

What's the Difference Between a Lion and a Tiger?
NewsMay 2, 2026

What's the Difference Between a Lion and a Tiger?

Lions (*Panthera leo*) and tigers (*Panthera tigris*) are both large Panthera cats, but they differ markedly in appearance, social structure, and evolutionary lineage. Tigers sport distinctive stripes and lack a mane, while male lions are identified by their prominent manes...

By Live Science
'One of the Most Rapid Transitions that I've Seen': NOAA Forecaster on How This Year's El Niño Could Shatter Records
NewsMay 1, 2026

'One of the Most Rapid Transitions that I've Seen': NOAA Forecaster on How This Year's El Niño Could Shatter Records

NOAA’s Climate Prediction Center says an El Niño is likely to form as early as May, with a 90% probability of development by fall 2024. Forecasts show a 25% chance the event will be “very strong,” pushing sea‑surface temperatures more than...

By Live Science
Poop-Encrusted Chamber Pots From the Roman Empire Reveal Oldest Known Human Cases of Crypto Parasite
NewsApr 30, 2026

Poop-Encrusted Chamber Pots From the Roman Empire Reveal Oldest Known Human Cases of Crypto Parasite

Archaeologists in Bulgaria uncovered four Roman chamber pots whose dried residues revealed the world’s oldest known human infection with the *Cryptosporidium* parasite. Laboratory ELISA testing also identified *Entamoeba histolytica* and *Taenia* tapeworm, indicating widespread gut disease among the frontier community...

By Live Science
'Two Lives Hang in the Balance': Risky Surgery in the Womb Saved Baby From Deadly Disorder at Just 25 Weeks...
NewsApr 30, 2026

'Two Lives Hang in the Balance': Risky Surgery in the Womb Saved Baby From Deadly Disorder at Just 25 Weeks...

Doctors at Orlando Health performed the first ex‑utero intrapartum treatment (ExIT) at 25 weeks to rescue a fetus with congenital high airway obstruction syndrome (CHAOS). The team created a tracheal catheter, drained fluid‑filled lungs, and returned the baby to the...

By Live Science
Early Data Links Wegovy to Risk of 'Eye Stroke' — Here's What to Know
NewsApr 29, 2026

Early Data Links Wegovy to Risk of 'Eye Stroke' — Here's What to Know

Early signals from a British Journal of Ophthalmology analysis suggest Wegovy, the semaglutide‑based weight‑loss injection, may be linked to ischemic optic neuropathy (ION), a rare form of eye stroke that can cause rapid vision loss. The study examined 31,774 FDA...

By Live Science
Can NASA and SpaceX Really Build a Moon Base in the Next 10 Years?
NewsApr 29, 2026

Can NASA and SpaceX Really Build a Moon Base in the Next 10 Years?

NASA administrator Jared Isaacman announced a plan to begin building a permanent lunar base as early as 2027, aiming for a sustained human presence on the Moon. The proposal hinges on the Artemis program’s upcoming crewed missions, which are expected...

By Live Science
'Lifelong Monogamy' And 'Half Orphans': DNA Analysis Reveals Clues About Life on the Roman Frontier After the Fall of Rome
NewsApr 29, 2026

'Lifelong Monogamy' And 'Half Orphans': DNA Analysis Reveals Clues About Life on the Roman Frontier After the Fall of Rome

A DNA and isotopic analysis of 258 skeletons from southern Germany dated 400‑700 CE reveals that post‑Roman societies practiced lifelong monogamy, had higher life expectancy, and experienced a major demographic shift. Researchers found male life expectancy rose to about 43 years and...

By Live Science
Mount Etna Is Like No Other Volcano on Earth, Representing 'a New Type of Volcanism,' New Research Reveals
NewsApr 29, 2026

Mount Etna Is Like No Other Volcano on Earth, Representing 'a New Type of Volcanism,' New Research Reveals

Researchers published a study in JGR Solid Earth showing Mount Etna does not fit any of the three classic volcano types—mid‑ocean‑ridge, intraplate hotspot, or subduction‑zone. The volcano’s magma appears to rise from a melt‑rich low‑velocity zone in the mantle, exploiting...

By Live Science
Breakthrough in Experimental Light-Powered Quantum Computers Could Mean Scaling Them up Is Now Far More Viable
NewsApr 29, 2026

Breakthrough in Experimental Light-Powered Quantum Computers Could Mean Scaling Them up Is Now Far More Viable

Researchers at QuiX Quantum have unveiled photon distillation, a technique that pre‑emptively filters out rogue photons, achieving below‑threshold error mitigation in photonic quantum computers. By reducing errors before photons become qubits, the method cuts the qubit overhead required for fault‑tolerant...

By Live Science
New AI Algorithms Are 95% Better at Showing How the Universe Changes over Time
NewsApr 28, 2026

New AI Algorithms Are 95% Better at Showing How the Universe Changes over Time

A new suite of AI techniques called GAME (Genetic Algorithms with Marginalised Ensembles) dramatically sharpens cosmologists' ability to track how the universe evolves. By running multiple genetic algorithms and weighting their outputs, GAME boosts overall reconstruction accuracy by 20% and...

By Live Science
Drilling Has Begun at Our Sacred Site Pe' Sla, Setting a Dangerous Precedent for Indigenous Lands Across the Country. It...
NewsApr 28, 2026

Drilling Has Begun at Our Sacred Site Pe' Sla, Setting a Dangerous Precedent for Indigenous Lands Across the Country. It...

Drilling has started in the 2‑mile buffer around Pe' Sla, a federally protected sacred site in South Dakota, after the U.S. Forest Service issued a permit for exploratory graphite mining. The project uses a categorical exclusion, bypassing a full NEPA environmental...

By Live Science
'He Began to Cry, and Almost Fell to the Floor': The Fluffy Fossil that Finally Showed the World that Birds...
NewsApr 28, 2026

'He Began to Cry, and Almost Fell to the Floor': The Fluffy Fossil that Finally Showed the World that Birds...

In 1996 Chinese paleontologists uncovered Sinosauropteryx, a small theropod fossil coated in down‑like feathers, delivering the first concrete feathered dinosaur outside of birds. The find, photographed by Phil Currie and Pei‑ji Chen, stunned veteran John Ostrom and confirmed his long‑held...

By Live Science
New Data Center Will Be Partially Powered by Human Brain Cells for the First Time
NewsApr 28, 2026

New Data Center Will Be Partially Powered by Human Brain Cells for the First Time

Australian startup Cortical Labs has opened its first "biological data center" in Melbourne, deploying CL1 systems that integrate lab‑grown human neurons with conventional silicon chips. Each hybrid module houses roughly 200,000 stem‑cell‑derived neurons on a microelectrode array, creating a low‑power...

By Live Science
DwarfLab Dwarf Mini Smart Telescope Review
NewsApr 28, 2026

DwarfLab Dwarf Mini Smart Telescope Review

The DwarfLab Dwarf Mini is a pocket‑sized smart telescope that pairs a 1.2‑inch refractor with a 2 MP Sony sensor and a smartphone‑controlled app for automated alignment, stacking and image processing. Its lightweight design (1.8 lb) and built‑in EQ tracking let users...

By Live Science
Full Moon Helps Paint Vibrant, Muddy 'Brushstrokes' In Indonesian River — Earth From Space
NewsApr 28, 2026

Full Moon Helps Paint Vibrant, Muddy 'Brushstrokes' In Indonesian River — Earth From Space

Landsat 8 captured striking brushstroke‑like sediment patterns in the Rokan River’s estuary after a full “Strawberry Moon” produced a 5 m spring tide. The high tide, combined with the river’s regular tidal bore, lifted and redistributed sand and silt, creating visible striations from...

By Live Science
The Universe May End Trillions of Years Sooner than We Thought
NewsApr 28, 2026

The Universe May End Trillions of Years Sooner than We Thought

A new study using data from the Dark Energy Survey and DESI suggests dark energy’s equation of state may change over time, supporting an axion‑dark‑energy hybrid model. The model fits the galaxy observations but predicts that the combined effects of...

By Live Science
Astronomers Just Mapped One of the Largest Structures in the Universe, Long Hidden Behind the Milky Way's 'Zone of Avoidance'
NewsApr 26, 2026

Astronomers Just Mapped One of the Largest Structures in the Universe, Long Hidden Behind the Milky Way's 'Zone of Avoidance'

Astronomers have produced the first comprehensive map of the Vela Supercluster, a massive galaxy aggregation hidden behind the Milky Way’s Zone of Avoidance. The structure stretches roughly 300 million light‑years and holds matter equivalent to about 30 quadrillion suns, making it larger...

By Live Science
'Eventually, It Becomes You': Inventors of New 'Living' Knee Replacement Describe Why This Tech Is Desperately Needed and How It...
NewsApr 25, 2026

'Eventually, It Becomes You': Inventors of New 'Living' Knee Replacement Describe Why This Tech Is Desperately Needed and How It...

Columbia University and the University of Missouri are developing NOVAKnee, a 3D‑printed, biodegradable knee implant seeded with stem‑cell‑derived bone and cartilage. The scaffold is designed to dissolve as new tissue forms, potentially offering a longer‑lasting solution than metal‑plastic prostheses that...

By Live Science
Science History: Chernobyl Nuclear Power Plant Melts Down, Bringing the World to the Brink of Disaster — April 26, 1986
NewsApr 25, 2026

Science History: Chernobyl Nuclear Power Plant Melts Down, Bringing the World to the Brink of Disaster — April 26, 1986

On April 26, 1986, operators at Chernobyl’s Reactor 4 performed a safety‑test that deviated from protocol, keeping the reactor at half power and causing xenon buildup. A rapid power drop led the crew to withdraw most control rods, triggering a 100‑fold power surge...

By Live Science
Building a Massive Dam Between Alaska and Russia Could Prevent AMOC Collapse, Scientists Say
NewsApr 24, 2026

Building a Massive Dam Between Alaska and Russia Could Prevent AMOC Collapse, Scientists Say

Scientists modeled a three‑dam system spanning the 51‑mile Bering Strait, proposing that sealing the passage could bolster the Atlantic Meridional Overturning Circulation (AMOC) under low‑emission futures. Their simulations also warn that if the AMOC is already weakened, the same closure...

By Live Science
Thríhnúkagígur: The only Volcano on Earth Where You Can Descend Into a Magma Chamber
NewsApr 24, 2026

Thríhnúkagígur: The only Volcano on Earth Where You Can Descend Into a Magma Chamber

Thríhnúkagígur, a dormant volcano near Reykjavík, hosts the world’s only accessible magma chamber. Visitors descend 210 m via a cable elevator into a 3,120 m² cavern decorated with vivid microbial and sulfur‑derived colors. The empty chamber resulted from a 4,500‑year‑old eruption that...

By Live Science
'Strong, Undeniable Public Examples of Something Positive': Astronaut Chris Hadfield on Why Artemis II Hit Him Hard, and Why We...
NewsApr 23, 2026

'Strong, Undeniable Public Examples of Something Positive': Astronaut Chris Hadfield on Why Artemis II Hit Him Hard, and Why We...

Veteran astronaut Chris Hadfield praised NASA’s Artemis II mission, saying it struck an emotional chord for him and underscored the public’s willingness to embrace high‑risk exploration. He drew parallels to Apollo 8, noting how both missions offered a collective sense of awe...

By Live Science
'Kraken' Octopus that Lived at the Time of the Dinosaurs Was a 62-Foot-Long Apex Predator of the Ocean
NewsApr 23, 2026

'Kraken' Octopus that Lived at the Time of the Dinosaurs Was a 62-Foot-Long Apex Predator of the Ocean

Scientists have re‑examined 27 fossil octopus jaws from Japan and Vancouver Island and identified two Cretaceous species, *Nanaimoteuthis jeletzkyi* and *N. haggarti*, that could have reached lengths of 10‑62 feet (3‑19 m). The larger species would make the newly described kraken the...

By Live Science
'Iran's Maldives' Could Drown in Oil Due to Spills From Air Strikes, Satellites Show
NewsApr 22, 2026

'Iran's Maldives' Could Drown in Oil Due to Spills From Air Strikes, Satellites Show

Satellite imagery captured extensive oil slicks in the Persian Gulf after U.S.–Israeli and Iranian air strikes hit refineries, tankers and petro‑chemical sites. The spills are drifting toward Lavan Island and the protected Shidvar wildlife refuge, threatening coral, turtles and seabird...

By Live Science
New Blood Test Aims to Spot Liver Scarring Before It Paves the Way to Cancer
NewsApr 21, 2026

New Blood Test Aims to Spot Liver Scarring Before It Paves the Way to Cancer

Researchers at Johns Hopkins have developed a blood test that analyzes cell‑free DNA fragments with a machine‑learning model to identify early‑stage liver fibrosis, a reversible precursor to cirrhosis and liver cancer. In a study of 423 participants, the assay detected...

By Live Science
A Giant 'Shadow' Has Been Creeping Across Mars for 50 Years — and Scientists Aren't Sure Why
NewsApr 20, 2026

A Giant 'Shadow' Has Been Creeping Across Mars for 50 Years — and Scientists Aren't Sure Why

A dark, ash‑covered patch in Mars' Utopia Planitia has been steadily expanding for five decades, moving southward at roughly 6.5 km (4 miles) per year. The feature, first photographed in 1976, consists of volcanic minerals such as olivine and pyroxene left by ancient...

By Live Science
Bruce the Parrot Is Missing His Upper Beak —‬ but that Hasn't Stopped Him From Becoming an Undefeated Jousting Champion
NewsApr 20, 2026

Bruce the Parrot Is Missing His Upper Beak —‬ but that Hasn't Stopped Him From Becoming an Undefeated Jousting Champion

Researchers observed Bruce, a kea missing its entire upper beak, develop a novel jousting style that has made him the undefeated alpha male in his captive group. By thrusting with his exposed lower beak, he displaced opponents in 73% of...

By Live Science
Scientists Identify Main Cause of Extreme Nausea and Vomiting in Pregnancy
NewsApr 20, 2026

Scientists Identify Main Cause of Extreme Nausea and Vomiting in Pregnancy

Scientists have pinpointed the growth differentiation factor 15 (GDF15) gene as the leading cause of hyperemesis gravidarum (HG), the most severe form of pregnancy nausea and vomiting. The genome‑wide study of nearly 11,000 HG cases and 420,000 controls also highlighted...

By Live Science
Loneliness May Contribute to Memory Issues, but Not Dementia — They Are 'Not the Same Thing'
NewsApr 19, 2026

Loneliness May Contribute to Memory Issues, but Not Dementia — They Are 'Not the Same Thing'

A new six‑year study of more than 10,000 adults aged 65‑94 found that loneliness is associated with memory difficulties but does not increase the risk of dementia. Participants were dementia‑free at baseline, and researchers tracked cognitive performance while noting loneliness...

By Live Science
700-Year-Old Mummy From Bolivia Contains Earliest Confirmed Evidence of Strep Throat Bacteria in the Americas
NewsApr 18, 2026

700-Year-Old Mummy From Bolivia Contains Earliest Confirmed Evidence of Strep Throat Bacteria in the Americas

Researchers have extracted a near‑complete genome of Streptococcus pyogenes from a 700‑year‑old mummy discovered in a Bolivian chullpa. The DNA shows the bacterium, responsible for modern strep throat and scarlet fever, was present in the Americas centuries before European colonization....

By Live Science
Science News This Week: Physicists Witness Faster-than-Light Darkness Pinpricks, Humans Are Still Evolving, and some Polar Bears Are Getting Fatter...
NewsApr 18, 2026

Science News This Week: Physicists Witness Faster-than-Light Darkness Pinpricks, Humans Are Still Evolving, and some Polar Bears Are Getting Fatter...

Scientists reported the first observation of singularities in combined light and sound waves that travel faster than light, a breakthrough that could unveil hidden processes across physics, chemistry and biology. In parallel, researchers captured quantum entanglement between two moving atoms,...

By Live Science
Anglo-Saxon Burial Holds an Older Sister Cradling Her Little Brother After They Both Died 1,400 Years Ago, Possibly of an...
NewsApr 16, 2026

Anglo-Saxon Burial Holds an Older Sister Cradling Her Little Brother After They Both Died 1,400 Years Ago, Possibly of an...

Archaeologists uncovered a seventh‑century Anglo‑Saxon double burial in Cherington containing a teenage girl and a young boy. DNA analysis by the Francis Crick Institute confirmed they were siblings, a rare find for this period. The positioning of the sister cradling...

By Live Science
Colorado River May Have Pooled and Spilled over to Form the Grand Canyon, Solving a Long-Standing Mystery ‪—‬ but Not...
NewsApr 16, 2026

Colorado River May Have Pooled and Spilled over to Form the Grand Canyon, Solving a Long-Standing Mystery ‪—‬ but Not...

A new study published in Science argues that the Colorado River once pooled in a massive lake in the Bidahochi Basin before spilling over and carving the Grand Canyon about 5.6 million years ago. Researchers used zircon mineral dating and sediment...

By Live Science
'We All Screamed when It Happened': Bright-Green Fireball Meteor Caught Exploding over Famous Viking Raid Site in UK
NewsApr 16, 2026

'We All Screamed when It Happened': Bright-Green Fireball Meteor Caught Exploding over Famous Viking Raid Site in UK

On April 13 a bright emerald‑green fireball exploded over the North Sea, illuminating Lindisfarne (Holy Island), the famed Viking‑raid site off England’s northeast coast. The meteoroid, roughly 12 g and moving at about 20,000 mph, fragmented in the atmosphere, creating a seven‑second display...

By Live Science
Stephen Hawking's Black Hole Information Paradox Could Be Solved — if the Universe Has 7 Dimensions
NewsApr 16, 2026

Stephen Hawking's Black Hole Information Paradox Could Be Solved — if the Universe Has 7 Dimensions

A new theoretical study published March 19 2026 proposes that black holes never fully evaporate but leave behind ultra‑tiny, stable remnants. The mechanism relies on three hidden spatial dimensions, giving spacetime seven dimensions, whose torsion creates a repulsive force that halts Hawking...

By Live Science
'Human Evolution Didn't Slow Down; We Were Just Missing the Signal': Large DNA Study Reveals Natural Selection Led to More...
NewsApr 15, 2026

'Human Evolution Didn't Slow Down; We Were Just Missing the Signal': Large DNA Study Reveals Natural Selection Led to More...

Researchers analyzed 16,000 ancient and modern West Eurasian genomes, uncovering nearly 500 gene variants shaped by natural selection over the past 10,000‑15,000 years. The study found increased frequencies of light skin, red hair, and resistance to HIV and leprosy, while...

By Live Science
Artemis II Quiz: Is Your Knowledge of NASA's Historic Moon Mission Out of This World?
NewsApr 15, 2026

Artemis II Quiz: Is Your Knowledge of NASA's Historic Moon Mission Out of This World?

NASA’s Artemis II mission marked humanity’s first crewed lunar flyby in over five decades, completing a ten‑day Orion flight that looped around the Moon and returned safely to Earth. The crew of four, including Canada’s Jeremy Hansen, tested critical life‑support, navigation...

By Live Science
New Study Confirms Lobsters Feel Pain, Driving Scientists to Call for a Ban on Boiling Them Alive
NewsApr 15, 2026

New Study Confirms Lobsters Feel Pain, Driving Scientists to Call for a Ban on Boiling Them Alive

A new study published in Scientific Reports shows that Norway lobsters experience pain, as analgesics like aspirin and lidocaine reduced their escape tail‑flip response to electric shocks. Researchers interpret the tail flip as a pain reflex, not merely a stress...

By Live Science
Ancient Process that Created Rare Earth Elements Discovered — and It Could Help Us Locate Desperately Needed Deposits
NewsApr 15, 2026

Ancient Process that Created Rare Earth Elements Discovered — and It Could Help Us Locate Desperately Needed Deposits

Scientists have identified that most rare‑earth element (REE) deposits and their host alkaline or carbonatite magmas are situated above ancient subduction zones. By modeling plate‑tectonic history over the past two billion years, the study found 67% of alkaline magma blobs...

By Live Science
73 Moon Landings? NASA's 'Moon Base User's Guide' Reveals the Agency's 'Most Ambitious Space Project' Will Be Fraught with Challenges
NewsApr 15, 2026

73 Moon Landings? NASA's 'Moon Base User's Guide' Reveals the Agency's 'Most Ambitious Space Project' Will Be Fraught with Challenges

NASA released a nine‑page "Moon Base User’s Guide" outlining a plan for 73 lunar landings and a $20 billion permanent base by the early 2030s. The roadmap splits the effort into three phases, beginning with 21 robotic landings by 2029 and...

By Live Science
Triassic Croc Relative From Ghost Ranch, New Mexico Finally Identified After Nearly 80 Years in Museum Basement
NewsApr 14, 2026

Triassic Croc Relative From Ghost Ranch, New Mexico Finally Identified After Nearly 80 Years in Museum Basement

A fossil unearthed in 1948 at Ghost Ranch, New Mexico, has been re‑examined and named Eosphorosuchus lacrimosa, a short‑snouted crocodylomorph distinct from the previously assumed Hesperosuchus agilis. The specimen, hidden in Yale's Peabody Museum basement for 75 years, features a...

By Live Science
Mini Lake Meets Snowy Rim of Canada's Oldest Ice Mass — Earth From Space
NewsApr 14, 2026

Mini Lake Meets Snowy Rim of Canada's Oldest Ice Mass — Earth From Space

A 2010 NASA EO‑1 satellite image captures Gee Lake, a 3.2 km wide water body, bisecting the snowy rim of the Barnes Ice Cap on Baffin Island. The glacier, up to 500 m thick, preserves ice dating back 20,000 years, making it Canada’s oldest...

By Live Science
Antiseptic-Tolerant Germs Spread Through the Air in Hospitals, Early Study Hints
NewsApr 13, 2026

Antiseptic-Tolerant Germs Spread Through the Air in Hospitals, Early Study Hints

A new study in Environmental Science & Technology found that chlorhexidine, a widely used hospital antiseptic, can persist on ICU surfaces for at least 24 hours, creating micro‑environments where bacteria develop tolerance. Researchers swabbed 219 samples in an Illinois ICU...

By Live Science
Homo Erectus' Tools Include Stunning Geodes and Fossils, Possibly as a Way to Connect with the Cosmos, Study Finds
NewsApr 13, 2026

Homo Erectus' Tools Include Stunning Geodes and Fossils, Possibly as a Way to Connect with the Cosmos, Study Finds

Archaeologists in Israel uncovered ten hand axes dating 500,000–200,000 years ago that were deliberately shaped around fossils, geodes, and natural hollows. The tools, attributed to Homo erectus, represent the largest known cluster of such geode‑bearing artifacts, suggesting intentional selection of...

By Live Science
Sperm Quality Is at Its Peak in the Summer, Study Finds
NewsApr 13, 2026

Sperm Quality Is at Its Peak in the Summer, Study Finds

A study of 15,581 sperm donors in Denmark and Florida found that progressively motile sperm peak in June‑July and dip in December‑January, independent of temperature. The researchers measured semen volume, concentration and motility using computer‑assisted analysis, confirming a seasonal pattern...

By Live Science
Scientists Are Trying to Build a Vaccine that Works Against Almost Any Respiratory Pathogen — Here's How Close They Are.
NewsApr 13, 2026

Scientists Are Trying to Build a Vaccine that Works Against Almost Any Respiratory Pathogen — Here's How Close They Are.

Scientists at Stanford have engineered an experimental nasal spray that activates the lungs' innate immune system rather than targeting specific antigens. In mouse studies the spray slashed viral loads by roughly 700‑fold and bacterial counts by 200‑fold, while also dampening...

By Live Science
Human Ancestors Butchered and Ate Elephants 1.8 Million Years Ago, Helping to Fuel Their Large Brains
NewsApr 12, 2026

Human Ancestors Butchered and Ate Elephants 1.8 Million Years Ago, Helping to Fuel Their Large Brains

Archaeologists at Olduvai Gorge's EAK site uncovered a 1.8‑million‑year‑old Elephas recki skeleton alongside Oldowan stone tools, providing the earliest direct evidence that hominins butchered elephants. Spatial taphonomy and green‑break bone patterns indicate coordinated human processing rather than scavenger activity. The...

By Live Science
Does the Moon Look the Same From Everywhere on Earth?
NewsApr 12, 2026

Does the Moon Look the Same From Everywhere on Earth?

The moon’s appearance changes with latitude, so observers in the Southern Hemisphere see a full moon rotated 180 degrees compared with the Northern Hemisphere. Between temperate locations, the moon’s orientation can differ by up to 97 degrees, as illustrated by...

By Live Science
Do the Microbes in Your Gut Influence What Foods You Like?
NewsApr 11, 2026

Do the Microbes in Your Gut Influence What Foods You Like?

Scientists have long suspected gut microbes shape eating habits, and recent animal studies provide concrete evidence. In 2022, researchers transplanted microbiomes from wild carnivores, herbivores and omnivores into germ‑free mice, finding that the mice’s food preferences shifted to match their...

By Live Science