Salt: Mover and shaker in ancient Maya society

Salt is essential for life. As ancient civilizations evolved from hunters and gatherers to agrarian societies, it has not been clear how people acquired this mineral that is a biological necessity. However, an anthropologist ...

Study reveals how ancient fish colonized the deep sea

The deep sea contains more than 90% of the water in our oceans, but only about a third of all fish species. Scientists have long thought the explanation for this was intuitive—shallow ocean waters are warm and full of resources, ...

What the elephant shark can tell us about progesterone

Researchers at University of California San Diego School of Medicine and in Japan have used an ancient fish to reel in new insights about human biology and, in particular, how and why a widely used medication works to abort ...

Off the scales: Fish armor both tough and flexible

Humans have drawn technological inspiration from fish scales going back to ancient times: Romans, Egyptians, and other civilizations would dress their warriors in scale armor, providing both protection and mobility. Now, ...

Teeny teeth indicate ancient shark nurseries

Fuelled by Hollywood and its vision of Jaws, sharks conjure images of fearsome predators patrolling our seas in search of their next unfortunate victim. It is therefore hard to imagine sharks as relatively small, harmless ...

Scientists identify likely origins of vertebrate air breathing

University of Alaska Fairbanks scientists have identified what they think is the ancestral trait that allowed for the evolution of air breathing in vertebrates. They will present their research at the 42nd annual meeting ...

Local dig uncovers new species of ancient fish

(Phys.org) —Researchers from The Australian National University (ANU) working on the New South Wales south coast have discovered a new species of ancient fish, after unearthing the largest fossilised lobe-finned fish skull ...

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