Once hailed as a national model for clean energy, the Napa Valley College solar field quietly shut down after 15 years.

Semitransparent solar cells with natural looking color and strong heat blocking offer a realistic way for windows to generate ...

The Joshua Treenial is a program of art installations, performances and community building highlighting what makes Joshua ...

Ice is not quiet. Standing at the Ilulissat Icefjord in Greenland under a midnight sun, a clash of titans got underway: “Snap ...

As NASA prepared astronauts for its second mission into space, National Geographic had exclusive behind-the-scenes access for ...