ETH Zurich professor of geology Domenico Giardini inside the BedrettoLab. Researchers have made the ground shake in southern Switzerland, triggering thousands of tiny earthquakes in a monitored setting, as they seek to discover seismicity insights that could reduce risks. "It was a success!" said Domenico Giardini, one of the lead researchers on the project, as he inspected a crack in the rock wall lining a narrow tunnel far below the Swiss Alps. Wearing a fluorescent orange jumpsuit and helmet, the geology professor at the Federal Institute of Technology in Zurich (ETH Zurich) switched on his headlight to get a better look. "We had seismicity," he said excitedly, explaining that the goal was "to understand what happens at depth when Earth moves." Giardini was standing in the BedrettoLab carved out in the middle of a narrow 5.2-kilometer (3.2-mile) ventilation tunnel leading to the Furka railway tunnel.…