Imagine strolling down a sidewalk made of algae or building a wall with lab-grown, bio-cement blocks. Prometheus Materials, a CU Boulder spinout creating carbon-free alternatives to concrete, is ...

Fargo homeowners must clear sidewalks within 24 hours of a city notice to avoid fines. Experts recommend avoiding salt to protect concrete and suggest sand or safer alternatives. Fargo officials say ...

Heavy snowfalls and the rise and fall of temperatures have led to many icy sidewalks in Butte. Removing compacted snow and ice with shovels or snow blowers can be very difficult. At times homeowners ...