In Pennsylvania, where 13 percent of the bridges have been classified as structurally deficient, engineers are using artificial intelligence to create lighter concrete blocks for new construction. Another project is using A.I. to develop a highway wall that can absorb noise from cars — and some of the greenhouse gas emissions that traffic releases as…
WASHINGTON — The Biden administration announced Wednesday that it has banned logging and road-building on about nine million acres of the Tongass National Forest in Southeast Alaska, aiming to settle a two-decade battle over the fate of North America’s largest temperate rainforest. The new rule reinstates protections in the pristine Alaskan back country that were…
The latest round of storms in California created punishing travel conditions across the state on Saturday, with icy roads snarling traffic in the Sierra Nevada mountains and downpours cutting off roadways south of San Francisco along the Central Coast. By Saturday afternoon, mountain highways had closed several times after cars and trucks lost control and…