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AP Top U.S. News at 4:31 a.m. EST

School district teams with Sandy Hook mom to teach empathy
NEW BRITAIN, Conn. (AP) -- Nelba Marquez-Greene believes the Sandy Hook Elementary School massacre, which killed her 6-year-old daughter, could have been avoided if more had been done years earlier to address the social isolation and mental health problems of the shooter, Adam Lanza....

Survivors mark anniversary of nightclub fire that killed 100
WEST WARWICK, R.I. (AP) -- Survivors of a 2003 nightclub fire that killed 100 people have marked the 14th anniversary of the blaze with small gatherings where it happened....

Groups, individuals helping white extremists shed hate
ATHENS, Ga. (AP) -- The Celtic cross tattoo on Shannon Martinez's leg gives away her past....

NASA aims to measure vital snow data from satellites
DENVER (AP) -- Instrument-laden aircraft are surveying the Colorado high country this month as scientists search for better ways to measure how much water is locked up in the world's mountain snows - water that sustains a substantial share of the global population....

Atlanta, other cities eye test tracks for self-driving cars
ATLANTA (AP) -- Self-driving vehicles could begin tooling down a bustling Atlanta street full of cars, buses, bicyclists and college students, as the city vies with other communities nationwide to test the emerging technology....

Police say newly freed gang member killed California officer
LOS ANGELES (AP) -- Whittier police thought they were helping a driver after a car crash....

Special delivery: US-born panda cub Bao Bao bound for China
WASHINGTON (AP) -- The National Zoo is packing up its American-born panda cub Bao Bao for a one-way flight to China, where the 3-year-old will eventually join a panda breeding program....

Creeks, rivers top banks after latest California storm
SAN FRANCISCO (AP) -- Creeks and rivers topped their banks, hundreds of homes were evacuated and several thousand people found themselves trapped in a rural hamlet as Northern California emerged Tuesday from yet another winter storm....

Court considers constitutionality of Ohio execution process
COLUMBUS, Ohio (AP) -- A federal appeals court will hear arguments Tuesday over the constitutionality of Ohio's lethal injection process as the state tries to start carrying out executions once again....

Circus lionized for cutting animal acts will bring them back
BOSTON (AP) -- A circus is under fire for bringing back animal acts a year after earning praise from animal rights groups for dropping them to keep up with changing public attitudes....

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A look around the Statue of Liberty
A look at Guantanamo's history
Up to the Minute
DC panda fans bam-boo-hoo as US-born cub leaves for China

Man who discussed Dylann Roof attack set to be in court

Creeks, rivers top banks after latest California storm

Groups, individuals helping white extremists shed hate

Dozens of headstones toppled at Missouri Jewish cemetery

The Latest: California levee breach plugged

Connecticut home invasion killer seeks new trial

The Latest: Crowd holds vigil for slain Whittier officer

Officials: Women's college raises record-high $486 million

Police: 4 teens wounded in 2 separate shootings in Cleveland