U.S.

NPR fact checks some of the claims made by candidates Hillary Clinton and Bernie Sanders in the latest Democratic presidential debate.

Law enforcement experts say this year's Super Bowl is one of the most guarded public events in recent history. But you won't hear that from federal or local officials. They are very tight-lipped about security.

NPR's Robert Siegel reports on people who are not involved in presidential campaigns traveling to New Hampshire to observe the action surrounding the primary. There are families trying to give their kids a civics lesson, couples trying to see presidential politics up close, and groups of students who serve as interns for campaigns as part of their studies.

The cleverly named LDRIC — Launch Directional Robot Intelligent Circuitry — pronounced "Eldrick," which is Tiger Woods' given name, aced the par-3 16th hole at TPC Scottsdale.

At least two people were seriously injured when the crane collapsed early Friday, the New York City Fire Department says. Several cars in Manhattan's Tribeca neighborhood were crushed.

Discovery of Zika virus in the saliva and urine of infected people is concerning but may not mean the pathogen can actually be transmitted through those fluids, experts caution.

The January jobs report indicated unemployment was at 4.9 percent, the lowest rate since the recession. But the U.S. only added 151,000 jobs, missing economists' expectations of 190,000 new jobs.

"We love you, Dave Mirra. We're going to miss you," says the mayor of Greenville, N.C., the town where the legendary X Games athlete lived for years.

An adviser to Gov. Jerry Brown says the well that has been leaking since October could be capped in days — sooner than the end-of-February target that had been set by the utility that owns the well.

Medical researchers often use race to define health risks. But a geneticist and a sociologist say racial categories don't accurately reflect who people are, and that science has to change.