After a four-year closure due to natural disasters, Crystal Cave in Sequoia National Park reopened to the public this weekend in time for Memorial Day, the unofficial start of the summer. Crystal Cave ...

Who would have thought a crystal exhibition could be so noisy? Climb the stairs of the Design Museum to reach 'Digital Crystal' and the decibels ... grow and combine in a computer-generated crystal ...

It's such a glorious place, it's like being in a modern art exhibit. I kept reminding myself ... Yet remarkably, for the people who own and run the Naica mine, the crystal cave is a side-show, a ...