What Exactly Are "Black Boxes?"
When a plane crashes, there's a search for its "black box" — a tool which records crucial flight data that might explain how the crash occurred.
LEARN MOREReal-time data streaming could offer precise details about plane crashes, but financial and technical hurdles make it less likely to catch on.
Eighty projects will improve roads, rail, ports, transit systems and other surface transportation infrastructure in 37 states.
Unions and regulators say the second crew member plays a crucial safety role in helping operate the train and respond to emergencies.
The Francis Scott Key Bridge took five years and $60 million to build in 1970, but will cost considerably more to rebuild this time around.
Researchers say poor air quality as a result of wildfires will cause thousands of additional deaths per year in the U.S.
Authorities said the 18-year-old high school student wrote a 129-page manifesto detailing plans to gain notoriety by shooting up a school.
An investigation has been launched after video posted to social media appears to show a Colorado Rockies coach in the plane's cockpit during flight.