Rare-earths become water-repellent only as they age

Rare-earths become water-repellent only as they age

Surfaces that have been coated with rare earth oxides develop water-repelling properties only after contact with air. Even at room temperature, chemical reactions begin with...
Huns and settlers may have cooperated on the frontier of Roman Empire

Huns and settlers may have cooperated on the frontier of Roman Empire

Analysis of isotopes in bones and teeth from fifth-century cemeteries suggests that nomadic Huns and Pannonian settlers on the frontier of Roman Empire may...
New species of terrestrial crab found climbing on trees in Hong Kong

New species of terrestrial crab found climbing on trees in Hong Kong

A new species of terrestrial crab has been found to climb trees on the eastern coast of Hong Kong. All specimens spotted during the survey...
For this New Zealand parrot, 'laughter' is contagious

For this New Zealand parrot, ‘laughter’ is contagious

When people are feeling playful, they giggle and laugh, making others around them want to laugh and play too. Now, researchers reporting in Current Biology on March...
Last remnant of North American ice sheet on track to vanish

Last remnant of North American ice sheet on track to vanish

The last piece of the ice sheet that once blanketed much of North America is doomed to disappear in the next several centuries, says...
Wild chimpanzees have surprisingly long life spans

Wild chimpanzees have surprisingly long life spans

A 20-year demographic study of a large chimpanzee community in Uganda's Kibale National Park has revealed that, under the right ecological conditions, our close...
Courtship behavior trapped in 100-million-year-old amber

Courtship behavior trapped in 100-million-year-old amber

Courtship behaviors, frequent among modern insects, have left extremely rare fossil traces. In odonates, the male must persuade the female to mate in tandem and...
The ancient origins of the Chow Chow

The ancient origins of the Chow Chow

The Chow Chow is an East Asian dog breed and one of the first to emerge after the domestication of the dog. It is believed...
Smart sharks have robust social networks and learn to avoid capture

Smart sharks have robust social networks and learn to avoid capture

Sharks form strong social networks that are relatively unaffected when several members leave the group, and members also learn how to avoid capture, new...
Human Skull Evolved Along with Two-Legged Walking

Human skull evolved along with two-legged walking

The evolution of bipedalism in fossil humans can be detected using a key feature of the skull -- a claim that was previously contested...

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