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 ...

The park is named for Duane LeRoy Bliss, one of the 19th century lumber barons who nearly chopped down every tree at Lake ...

For them, our jagged cliffs and banks of boulders are ... of the challenge of rock climbing. On a hot summer evening, a group of men and women are gathered around a rock face in Logy Bay.