Five months after deadly floods ravaged Valencia, the Spanish city is hosting its biggest celebration of the year.

From Wikipedia: "By the 1950s the pile of sand had grown large enough that people experimented with skiing on it, and in 1956 a ski club was formed. Uniquely to this hill, skiing is done directly ...

A recently published whitepaper proposes Mountain Gravity Energy Storage — gravity-based energy storage using sand or gravel in mountainous areas — is the technology that can bridge the gap.

The artwork and papier-mache sculptures are painstakingly crafted and then burned in Las Fallas, the most important yearly ...