The south side of a 100-year-old bridge in Tempe collapsed after a train derailment the morning of July 29.

Production begins on mobile units that deactivate coronavirus, and air-handling-system retrofits will be available soon

States make moves to add total of more than 7,500 MW of planned built capacity and supporting infrastructure

A Canadian company’s “smog-eating” highway noise wall technology, aimed at trapping air pollutants emitted by vehicles, is currently being tested on highways in Toronto and the U.K. Proponents say it can reduce overall air pollution by 50%.

Legislation, which provides funding over five years, now goes to White House for Trump's signature.

Current head of Corps' civil works and emergency programs will succeed Semonite as agency's commander.

A collaboration, led by Medistar Corp. and researchers from the University of Houston and Texas A&M, has developed a heating ventilating and air conditioning system filter that can trap and instantly kill 99.8% of the coronavirus responsible for the COVID-19 pandemic, says the team.

Last summer, Chennai became the world’s first major city in which there was no water for residents to drink. But, as climate change makes flooding and drought more common, the city of 8 million is unlikely to be the last to run dry.