European researchers and students are conducting a mock moon habitat trial under a glacier near the famous Matterhorn in Switzerland's Alps. Called IGLUNA, the demonstration is organized by the Swiss Space Center and the European Space Agency. Teams from across Europe arrived in the car-free mountain town of Zermatt, Switzerland, last week to set up their experiments, which include an ice-digging robot, a construction robot, an algae bioreactor and a hydroponic system for growing veggies. They've also built a habitat 8.5 feet (2.6 meters) tall buried deep in the ice. Zurbrügg, who is leading the habitat-construction team, said that his...