The azhdarchid group of pterosaurs were some of the largest animals ever to fly. The giant reptiles lived between 66 million and 225 million years ago, and their unusual proportions—big heads at the ...

Six years ago, archeologists discovered a testament to human survival buried beneath birch, pear, and cherry trees. Under layers of dirt, pinpricked with animal burrows and shrubs, was a circle of ...

Somewhere in the frozen plains of southwestern Russia, a 40-foot circle of mammoth bones and tusks has stood for over 24,000 years. This is the remnant of an ancient structure made using animal bones ...

Image: A Dual Energy X-ray Absorptiometry (DEXA) scan of a human hip bone, left, and a human spine, right. Credit: NASA Are bigger bones stronger bones? Not necessarily, according to a recent NASA ...