Author: Trevor Hughes, USA TODAY

Maine authorities continued to probe two shootings they believe are connected – one on a busy interstate – that left four dead and three injured.

Town officials said a firearm was recovered, and police said a suspect has been arrested and will face charges.

So many train derailments feature train cars spilling into or near waterways for a simple reason: That’s where the tracks run.

New technology offers the possibility of not just reducing carbon emissions but rolling them back by vacuuming CO2 out of the air.

Kentucky Gov. Andy Beshear said he knows many of the people who work at the bank, and lost friends in the Monday shooting. Here’s what we know.

Some train accident rates have risen nearly 25% in the past decade, and union workers say further cuts to staffing imperil the nation’s safety.

Authorities say the former Covenant student entered through a side door and killed six people before being shot dead by responding police officers.

While freight train hazmat crashes are rare, firefighters at a unique training facility prepare for the worst-case scenarios.