The number this week is 750,000. That's how many passengers travel Amtrak's Northeast Corridor daily. NPR's Rachel Martin speaks with data expert Mona Chalabi about facts and figures of rail travel.
Dr. Kent Brantly, one of the Americans who contracted Ebola last year, was invited back to his medical school to deliver the commencement address. NPR's Rachel Martin highlights some of his speech.
Investigators are still investigating what caused the Amtrak train to derail in Philadelphia. NPR's Rachel Martin speaks with engineer John Wright about the challenges of working on the railroad.
The 2016 presidential race is off to a slow start compared to the last two cycles. But the activity is starting to heat up in Iowa, where official and potential candidates spoke at a GOP dinner.
The tiny nation has some of Latin America's highest rates of obesity, hypertension and heart disease. The capital Montevideo has tried to intervene by making salt on the table illegal.
In a prisoner swap this week, a militant group released 19 of 31 Afghan Hazara men kidnapped in February. The kidnapping raised fears in this minority community of being targeted in sectarian attacks.
More than 100,000 people have fled the East African country during weeks of unrest. The BBC's Ruth Nesoba gives NPR's Arun Rath an update from Bujumbura, the capital, where people are doing their best to prepare for the days ahead.
A day after convicted Boston Marathon bomber Dzhokhar Tsarnaev was given the death penalty, Bostonians are grappling with the jury's sentence and bracing for legal appeals.
Amid reports that Amtrak's train 188 may have been struck by a projectile, the Federal Railroad Administration says Amtrak is required to install technology at the accident site that will automatically slow a speeding train.
It's been a tough political week for Jeb Bush and Hillary Clinton on issues of Iraq and Clinton Foundation funding. Political editor Ron Elving talks with NPR's Scott Simon about the implications.