Good evening. I'm Laura Burone Lopez. Jeff Bennett and Omna Nawaz are away. On the news hour tonight, New Year's celebrations turned to horror. A driver tore through Bourbon Street in New Orleans, killing and wounding multiple people in what's being investigated as a terrorist attack. After decades of work, Jimmy Carter's goal of eradicating a tropical disease appears within reach.

We examine the lasting global health legacy the late president leaves behind.

And new research shows exercise could be the most potent medical intervention ever known.

Stressing our bodies with exercise in just the right amount actually could be the most potent medical intervention ever known.

Stressing our bodies with exercise in just the right amount

actually prepares our bodies to deal with the stress of everyday life. Welcome to the News Hour.

At least 15 people are dead and dozens injured after a man driving a truck barreled through

the French Quarter in New Orleans early this morning, where people had gathered to usher

in the new year. Authorities found an ISIS flag and weapons in the truck.

The suspect, a U.S.-born citizen, is dead, and the FBI is investigating the attack as an act

of terrorism.

A warning, video of the attack is disturbing.

In New Orleans, what should have been a night of celebration ringing in the new year, ended in terror.

Authorities say at around 3.15 a.m., the suspect plowed a White Ford pickup truck into a crowd on Bourbon Street.

After crashing the vehicle, the driver fired at police officers on the scene.

Law enforcement intervened, killing the man, identified today as 42-year-old Sam Suid Dim Jabar.

All of this, leaving an unimaginable trail of destruction and lifeless bodies in the streets.

Today, a coroner van on the city's main roads, a popular area known for its bars and live music.

Now, an active crime scene.

More than 30 people were injured, including two police officers shot that remain in stable condition.

Witnesses described the scene as surreal.

What we saw was insanity.

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