A photo of the stone men (Chimulchek Culture) in the steppe area of Altai Mountains. These figures are characteristic of the peoples who lived in the area around the time of occupation at Tongtian. These specific examples are located at the Chimulchek site (ca. 4000 years old) and not far from Tongtian Cave. Ceramic sherds from the cave suggest that the occupants in the cave shared similar cultural traits to other people in the region. Credit: Jianjun Yu

5,200-year-old grains in the eastern Altai Mountains redate trans-Eurasian crop exchange

This very complete specimen of the ichthyosaur Suevoleviathan is from the Early Jurassic of Germany. Many excellently preserved ichthyosaur fossils are known from this time and have been collected from the UK and Germany. Mary Anning from Lyme Regis is intimately associated with fossil collection and found the first recognized ichthyosaur fossils in 1810. Credit: Dr Ben Moon & Dr Tom Stubbs

Boom and bust for ancient sea dragons

A graphic reconstruction of the giant turtle Stupendemys geographicus: male (front) and female individual (left) swimming in freshwater. Credit: Artwork: Jaime Chirinos

Extinct giant turtle had horned shell of up to three meters

Calculated lattice thermal conductivity of MgSiO3 postperovskite (PPv) and bridgmanite (Brg) under the Earth’s lowermost mantle conditions. Credit: Ehime University

Heat transport property at the lowermost part of the Earth’s mantle

Horseshoe Bend, Arizona

As groundwater depletes, arid American West is moving east

The image shows a thermokarst lake in Alaska. Thermokarst lakes form in the Arctic when permafrost thaws. Credit: NASA/JPL-Caltech

NASA flights detect millions of Arctic methane hotspots

A reconstruction of Laurasichersis relicta which lived in the northen hemisphere 66 millons years ago. Credit: José Antonio Peñas (SINC)

One single primitive turtle resisted mass extinction in the northern hemisphere

The fossil of Gunakadeit joseeae, which was found in Southeast Alaska. About two thirds of the tail had already eroded away when the fossil was discovered. Credit: University of Alaska Museum of the North

New thalattosaur species discovered in Southeast Alaska

The holotype of the species Retrophyllum oxyphyllum (comb. nov.), previously thought to be the oldest known bamboo. Credit: Peter Wilf

‘Oldest bamboo’ fossil from Eocene Patagonia turns out to be a...

The Siberian Traps, the scene of ancient volcanic eruptions 252 million years ago that led to a massive extinction of life on Earth. CCNY researchers Ellen Gales and Benjamin Black obtained samples for their study there.

A twist in the story of volcanic eruptions and mass extinctions

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