We use filtration and evaporation to separate out a mixture of water, sand and salt. The sand is removed using filtration, as it did not dissolve in the water. The remaining solution is heated until the water evaporates, leaving behind...

You could say Land art existed thousands of years even before oil painting, but it would take a group of American artists to bring it back to the public gaze in the 1960s and 70s. Artists like Michael Heizer, Robert Smithson, and Nancy...

We ventured into the Utah countryside to visit some of the best loved Land Art works of the 1970s, Robert Smithson's Spiral Jetty and Nancy Holt's Sun Tunnels, and check out the art that is happening there now. Also featured: William...