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Chipped teeth suggests Homo naledi had a unique diet

There was a lot of excitement when scientists reported the discovery of an entirely new hominin species, Homo naledi, in 2015. Since then, we are gradually learning more about them. For example, earlier this year, researchers ...

Ancient skeleton reveals amputation surgery 31,000 years ago

A skeleton discovered in a remote corner of Borneo rewrites the history of ancient medicine and proves amputation surgery was successfully carried out about 31,000 years ago, scientists said Wednesday.

Fracking leaks may make gas 'dirtier' than coal

(PhysOrg.com) -- Extracting natural gas from the Marcellus Shale could do more to aggravate global warming than mining coal, according to a Cornell study published in the May issue of Climatic Change Letters (105:5).

Mechanical metamaterials: Toughness and design criteria

Mechanical metamaterials are an emerging class of materials primarily governed by their architecture to create lightweight materials with extreme mechanical properties. The functionality of such materials is limited by their ...

Anomalous grooves on Martian moon Phobos explained by impacts

Some of the mysterious grooves on the surface of Mars' moon Phobos are the result of debris ejected by impacts eventually falling back onto the surface to form linear chains of craters, according to a new study.

US carbon emissions in surprise drop

US emissions of carbon dioxide blamed for climate change fell in 2011 and have slipped to a 20-year low this year as the the world's largest economy uses more natural gas and less coal, data shows.

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