Mountain

For nearly a century, a strange band of 5,200 holes carved into a hillside has defied explanation. Stretching for nearly a mile along the edge of the Pisco Valley, Monte Serpe – "serpent mountain" – may have finally revealed its secrets to scientists.

While hydroelectric dams are capable of generating a lot of electricity, they drastically disrupt the environment. Scientists have now proposed a simpler but still effective alternative, in which electric trucks replace such dams.

Scientists have concluded that the great mountain ranges of the world produced by the collision of Earth's tectonic plates reached their great heights thanks to lubricating graphite, which resulted from an abundance of ancient ocean life.

​NASA's Dawn spacecraft has succeeded in capturing the most detailed views to date of the solitary mountain nicknamed Ahuna Mons, discovered on the dwarf planet Ceres.

The tiny town of Tenna in Switzerland has put itself on the eco-map by building an innovative solar-powered ski lift.