China Cuts the Ribbon on the World's Absolute Longest Glass Walkway

China Cuts the Ribbon on the World's Absolute Longest Glass Walkway

The walkway extends 87.5 feet (nearly 27 meters) off the edge of a cliff, engineers say it can survive an 8.0 earthquake

Photo: Beautiful Double Valley Revealed in Alaska

Photo: Beautiful Double Valley Revealed in Alaska

A glacier carved the land in an unusual way, experts say