PENNSYLVANIA

Authorities are unsure whether there was more than one shooter responsible for killing a Pennsylvania state trooper and wounding another.

Viral video sensation "Apparently Kid" stars in his first television commercial for Petfresh using his former favorite word.

Museum officials have said the attraction was designed as a place for quiet reflection.

Live stream footage of the September 11 anniversary ceremony Thursday.

Leaving mementos in front of the National 9/11 Memorial in New York City is encouraged.

Thursday marks the 13th anniversary of the Sept. 11, 2001 terrorist attacks on the U.S.

The National Institutes of Health study is the largest independent review of fracking's impacts on nearby residents.

House policymakers said the proposed rules represented a massive government land grab of the nation's streams, ponds and ditches.

Gordon Ramsay returns Sep. 10 on NBC with 18 new chefs for Season 13 of "Hell's Kitchen."

The president's pensiveness on foreign policy projects weakness, according to critics.

Following an ACLU lawsuit, Norristown, Pa., repealed a law that branded domestic violence victims as nuisances.

These 18 National Finalists will try to become the first "American Ninja Warrior" Monday night on NBC.

People living in all 50 states are recipients of some type of 9/11 health benefit.

Rumblings about Shake Shack’s proposed initial public offering are getting louder up and down Wall Street.

Royal Dutch Shell is among the first companies to try to tap the Utica shale formation in northeastern Pennsylvania.

The North Carolina-based utility will own 40 percent of the Atlantic Coast Pipeline, which will cut through the Marcellus and Utica shale gas basins.

In the wake of political pressure from Beijing, Hong Kong's top pro-democracy party has no plans to disrupt the economy.

You may not have heard of them -- because they're like nothing you've seen before.

With a 70mph fastball and a flair for handling the media, Mo'ne Davis is dominating more than just the 2014 Little League World Series.

Hackers are increasingly able to take control of sensitive personal data, putting hospitals on the defensive.

According to experts, exposure to lead can slow down a child’s intellectual and physical development.