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 practice of dry stone wall construction in Ireland has been added to UNESCO's list of protected cultural heritages around ...

A century-old retaining wall at the intersection of West Ludington and South Pine streets in Iron Mountain will be reduced in ...

Dry stone walls are strong structures which are hand-built without any cement or mortar holding them together. They create boundaries and habitats on farms, and are used to help shelter animals.

His new technique of roasting limestone and clay in an oven and then grinding it to a powder to make "artificial stone" is now known as Portland cement - still the key ingredient in almost all ...