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The extinct American 'cheetah' was not a cheetah after all

With their slender bodies and long front legs, Miracinonyx trumani—often nicknamed the "American cheetah"—was long thought to be a North American analog of the African big cat. But in a new study published in the journal ...

Tiny fossils reveal big insights about ant ancestors

Two tiny ant fossils recovered in southern Saskatchewan are helping scientists better understand the evolutionary history of modern ants. Ant fossils dating from 72–56 million years ago are rare. What happened to insects ...

Neutron bone imaging brings T. rex to life

A broken rib from Scotty, the largest T. rex skeleton discovered, is helping scientists uncover new information about life on Earth 66 million years ago. Scotty's rib preserves something rarely seen in the fossil record: ...

Q&A: What dinosaur teeth reveal about diet and evolution

What did dinosaurs eat? Teeth provide important clues to understanding the ecology of dinosaurs, which became extinct approximately 66 million years ago. Their shape, structure and patterns of wear can help scientists reconstruct ...

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Paleontology & Fossils
Were Denisovans tall compared to other ancient humans? We should be skeptical
Evolution
Rethinking how we name and classify our human ancestors following recent evolutionary discoveries
Evolution
Male Neanderthal pelvises resemble those of modern females, challenging decades-old assumptions
Evolution
Amber fossil reveals firefly relative with unprecedented antennae
Evolution
Last common ancestor of humans and chimpanzees could have been a vertical climber, no matter its feet
Ecology
Giant crocodylians dominated the food chain in Miocene South America, fossil evidence suggests
Paleontology & Fossils
Crocodiles can't fly. Birds can. Scientists have finally figured out why
Evolution
A 236-million-year-old fossil challenges the story of mammalian live birth
Ecology
Paleontologists reconstruct forests of 56 million years ago with chilling parallels for our warming planet
Ecology
Two oceans, one country—and 20 times more sharks in the prehistoric Pacific
Ecology
Climate change decided who ruled as top predator 35 million years ago
Evolution
New evidence helps solve how earliest birds took flight
Paleontology & Fossils
Arctic fossil abandoned in 1948 proves to be record-size Triassic hunter
Evolution
Early snakes explored life underground, on land and at sea
Ecology
Dodo birds more clever than we thought
Paleontology & Fossils
Dodos probably weren't as stupid as historians made them out to be: new research
Evolution
Fossil study finds vision—not the 'thinking' frontal lobe—drove varied brain development in primates
Paleontology & Fossils
Small dinosaur fossil suggests Fukushima coast hosted iguanodontians of different sizes
Evolution
Were there tiny dinosaurs? New study explores one of evolution's biggest mysteries
Ecology
A new species of Ice Age toad discovered at La Brea Tar Pits: The spadefoot toad Spea labreae

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Archaeology
Beyond the sea walls: Underwater archaeology reveals the hidden scale of ancient Mediterranean ports
Astronomy
Hubble and Webb find that far-out solar system objects 'remember' the past
Astronomy
Interstellar visitor 3I/ATLAS carries clues from the frozen outskirts of another star system
Biochemistry
New way to harness copper makes antibiotic-resistant bacteria and cancer cells more vulnerable
Cell & Microbiology
Pumping antibiotics out: A new route to bacterial drug resistance
Quantum Physics
A new game demonstrates quantum advantage with provable classical limits
Astronomy
JWST finds extreme star-forming galaxies masquerading as faint quasars
Biochemistry
New screening system flags food-packaging chemicals linked to serious health risks
Astronomy
ALMA watches a massive binary assemble in real time
Space Exploration
Eggshells-inspired aluminum material offers significant protection from space debris
General Physics
A photon that challenges Einstein: According to current physics, it should never have reached Earth
Plants & Animals
Sea ice creates hidden highways for young Antarctic krill
Cell & Microbiology
Super-resolution imaging reveals details inside living cells
Earth Sciences
Marine heat waves boost coastal CO₂ uptake by 11%, analysis finds
General Physics
Superfluid qubit could help scale up quantum computers
Astronomy
Big supernova dataset challenges dark energy theory
Earth Sciences
Melting Svalbard glaciers may flush ancient methane from rocks beneath the ice
Cell & Microbiology
AI model decodes cell signaling fingerprints across diverse cell types
Plants & Animals
Worm's radical transformation shows metamorphosis can change the functions of cells
Polymers
Rearranged polymer chains create degradable materials with potential for stronger, tougher packaging

New evidence helps solve how earliest birds took flight

The first bird to inhabit Earth used its robust hind legs to make two or three powerful leaps while flapping its way to flight, according to a study by the University of Southampton published in Developmental Biology.

Early snakes explored life underground, on land and at sea

Snakes are highly modified lizards, with more than 4,000 living species today. The origin of snakes has long been one of evolutionary biology's most debated questions. Their sparse fossil record has made it hard to pin down ...

Dodo birds more clever than we thought

The Mauritian dodo—a global symbol of human-caused extinction and one of the world's largest pigeons—may not have deserved its reputation as a silly simpleton and may have been the only member of its group to live in the ...