AP Top U.S. News at 7:44 a.m. EDT

Investigators: US lab worker in Colorado faked test results
DENVER (AP) -- A worker at a federal laboratory in Colorado intentionally manipulated test results for years, possibly tainting research that includes toxic metals in the Everglades, uranium near the Grand Canyon and coal in Afghanistan, investigators say....

Judge blocks Mississippi law on objections to gay marriage
JACKSON, Miss. (AP) -- A federal judge blocked a Mississippi law on religious objections to same-sex marriage moments before it was set to take effect Friday, ruling it unconstitutionally establishes preferred beliefs and creates unequal treatment for gay people....

'Active shooter' report at military base was false alarm
JOINT BASE ANDREWS, Md. (AP) -- A report of an "active shooter" at a military base outside Washington where the presidential plane Air Force One is stationed turned out to be a false alarm, though it locked down the base for more than an hour....

Army Corps to reduce lake flows fueling Florida algae bloom
STUART, Fla. (AP) -- As a noxious algae bloom fouls beaches on Florida's Atlantic coast, the U.S. Army Corps of Engineers is preparing to reduce the flow of water from Lake Okeechobee that many blame for fueling the problem....

Are we overusing the tribute of flying flag at half-staff?
NEW YORK (AP) -- Nearly every day, somewhere in the country, the Stars and Stripes was lowered to half-staff last year in one of the most significant official gestures of mourning and respect, an Associated Press analysis found....

Lowering the flag: Some examples of half-staff tributes
NEW YORK (AP) -- Nearly 90 percent of days last year, one or more states were flying the American flag at half-staff to memorialize the deaths of military members, public officials, police, first responders, prominent citizens and victims of mass killings and disasters, The Associated Press found in analyzing information from all 50 states and the federal government....

The Latest: Casino union pickets Taj amid contract dispute
ATLANTIC CITY, N.J. (AP) -- The Latest on Atlantic City's main casino workers union and its strike against the Trump Taj Mahal casino (all times local):...

Union goes on strike against Trump Taj Mahal casino
ATLANTIC CITY, N.J. (AP) -- Striking union members chanted, banged drums and blew whistles as part of a raucous picket line on Atlantic City's Boardwalk outside the Trump Taj Mahal casino early Friday amid a contract dispute with owner and billionaire investor Carl Icahn at the start of the busiest weekend of the year for the casino industry....

After 16 years, man in 'Serial' murder case to get new trial
BALTIMORE (AP) -- After spending 16 years in prison for the killing of his former high school girlfriend, a man at the center of popular podcast "Serial" has a chance at freedom....

Studies testing kelp as local fix for acidifying seawater
HOOD CANAL, Wash. (AP) -- Scientist Joth Davis unspooled 150 feet of line holding thousands of tiny spores of kelp into Hood Canal in Washington state, while Brian Allen dove underwater and affixed the line to a buoy....

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Up to the Minute
North Carolina flight has rough landing at Florida airport

North Carolina woman admits to faking bomb threat at church

Army Corps to reduce lake flows fueling Florida algae bloom

Driver impaled by flying debris on Atlanta-area highway

Lowering the flag: Some examples of half-staff tributes

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Hurricane-proof welcome center opening on Alabama coast

10 Things to Know for Today

Man accused in Jewish Center bomb plot faces new charge

After 16 years, man in 'Serial' murder case to get new trial