When mandolin player Chris Thile joined fiddler Sara Watkins and her guitar-playing brother Sean to form Nickel Creek in California in 1989, Chris and Sara were all of 8 years old; Sean was 12.

Newport Beach debuted its $5.5 million device designed to capture trash flowing into Newport Bay and the ocean.

New York City environmental officials plan to reduce the heavy flow of sewage into Newtown Creek through the construction of a new tunnel that would serve as a major upgrade to the area’s ...