Scientists have unearthed in southeastern China the fossil of a quail-sized bird that lived about 150 million years ago ...

Five weeks is a long time to spend doing something. After five weeks, your excitement has probably worn off and you’ve ...

We have a natural fascination with time—how landscapes have been carved over millennia, how our bodies grow and sag with age, ...

The blueprint for U.S. energy leadership is that it must establish a resilient domestic energy strategy to remain globally ...

Hundreds of vendors from dozens of countries converged in Tucson, Arizona, for the annual Gem and Mineral Show, where the ...