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Search results for bone mineralization

Evolution Jan 25, 2023

Large mammals shaped the evolution of humans in Africa, says ecologist

That humans originated in Africa is widely accepted. But it's not generally recognized how unique features of Africa's ecology were responsible for the crucial evolutionary transitions from forest-inhabiting fruit-eater to ...

Archaeology Jan 17, 2023

Neanderthals: The oldest art in the world wasn't made by humans

One of the most hotly debated questions in the history of Neanderthal research has been whether they created art. In the past few years, the consensus has become that they did, sometimes. But, like their relations at either ...

Archaeology Jan 16, 2023

Early humans: Tooth enamel reveals life histories

If you take a magnifying glass and a flashlight and look at your teeth very carefully in the mirror, in places you can spot a pattern of fine, parallel lines running across your teeth. These correspond to the striae of Retzius ...

Ecology Jan 10, 2023

Rodent extinctions in Hispaniola may have been caused by humans

The island of Hispaniola once had among the highest diversity of rodents in the Caribbean, supporting 11 species that coexisted for thousands of years. Today, only one rodent species remains within the island's two countries ...

Biochemistry Dec 30, 2022

Researchers uncover evidence of 'hidden state' involving common ion

While conducting an otherwise straightforward investigation into the assembly mechanism of calcium-phosphate clusters, researchers at UC Santa Barbara and New York University (NYU) made a surprising discovery: Phosphate ions ...

Analytical Chemistry Dec 21, 2022

Neutron experiments reveal what maintains good function in bones

Around 500 million years ago, early vertebrates in the seas became fish, adopting an inner skeleton and a flexible spine based on a nanocomposite of fibers and mineral, known as bone material. This "invention" of evolution ...

Paleontology & Fossils Dec 15, 2022

Mega-predator likely wasn't underwater hunter, researchers argue

,The hunting habits of Spinosaurus aegyptiacus, the largest known predatory dinosaur to roam the Earth, have been subject to intense scientific debate since detailed descriptions of its most complete fossils to date were ...

Paleontology & Fossils Dec 2, 2022

T. rex's fancy footwork owed to special ligaments, study finds

How did Tyrannosaurus rex catch its food? Looking at T. rex's fossilized skull, the answer may seem obvious: monstrous jaws and sharp teeth capable of delivering a multi-ton bite force.

Veterinary medicine Dec 2, 2022

Ignore those puppy-dog eyes: Feeding dogs healthy treats during the holidays

Some dogs enjoy the spoils of begging for food; they might even swipe something off of a plate or the table when they think no one is watching. Yet these scraps aren't always healthy for dogs and can create health issues ...

Space Exploration Nov 7, 2022

Experiments to study gravity's impact on bone cells are heading to the International Space Station

A pair of experiments exploring bone density, designed by engineers at the University of Michigan, has left the Wallops Island, Virginia launchpad aboard a Northrop Grumman Corp. Antares rocket for the International Space ...

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