Stonehenge, the infamous stone circle on Salisbury Plain, U.K., dates to around 2500 B.C.E. The monument is aligned so that ...

Flatiron Sounds Music Festival: 1 p.m., The Green at The Civic Area, 1056 Canyon Blvd., Boulder. . Explore the vibrant vendor ...

The genesis of this global day traces back to 2014, when Indian Prime Minister Narendra Modi proposed the idea during his address at the 69th United Nations General Assembly.