The pile of trees, bushes and organic debris just keeps getting bigger. Throughout the work day, every day, trucks and trailers pull up to the field just south of Reems Creek Road, near Pink Fox ...
researchers at ETH Zurich have let an autonomous excavator loose on a big pile of boulders and reclaimed concrete. The goal? To build a 20 foot (6 meter) and 213 ft (65 m) long dry-stone wall as ...