Researchers solve a 150-year-old mystery about aetosaurs

Aetosaurs had a small head and a crocodile-like body. The land dwellers were up to six meters long and widely distributed geographically. They died out about 204 million years ago, at the end of the Triassic.

Growth rings on rocks give up North American climate secrets

Scientists have found a new way to tease out signals about Earth's climatic past from soil deposits on gravel and pebbles, adding an unprecedented level of detail to the existing paleoclimate record and revealing a time in ...

Europeans in the Americas 1,000 years ago

Columbus was not the first European to reach the Americas. The Vikings got there centuries before, although exactly when has remained unclear. Here, an international team of scientists show that Europeans were already active ...

Southern African dinosaur had irregular growth

Anyone who's raised a child or a pet will know just how fast and how steady their growth seems to be. You leave for a few days on a work trip and when you come home the child seems to have grown an inch! That's all well and ...

As sea ice disappears, a greener and browner Arctic emerges

Arctic sea ice has been in steep decline over the past two decades. A study of tundra shrubs published today in the journal PNAS shows that as sea ice disappears, the Arctic is becoming both greener and browner.

Diamonds grow like trees, but over millions of years

Diamonds consist of highly compressed carbon atoms and develop deep underground at relatively high pressures and temperatures of over 1000 degrees Celsius. Earth scientists from VU University Amsterdam show that diamonds ...

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