It spun on a tripod as it mapped its surroundings. “We use it on our trips 3D-scanning Ukrainian wooden churches — 17th and 18th centuries,” said Illia Lytvynchuk, an assistant in the ...

On Christmas Day two years ago, the holiday peace of Rautjärvi, a small Finnish town near the Russian border, was shattered when a devastating fire destroyed its historic, large wooden church. The ...