Gregory Warner

Gregory Warner is NPR's East Africa Correspondent. His reports cover the diverse issues and voices of a region that is experiencing unparalleled economic growth as well as a rising threat of global terrorism. His coverage can be heard across NPR and

Before joining NPR, Warner was a senior reporter for American Public Media's Marketplace, where he endeavored to make the economics of American health care vivid and engaging. He's used puppets to illustrate the effects of Internet diagnoses on the doctor-patient relationship. He composed a Suessian cartoon to explain why health care job growth policies can increase the national debt. His musical journey into the shadow world of medical coding won the 2012 Best News Feature award from the Third Coast International Audio Festival.

Prior to Marketplace, Warner was a freelance radio producer reporting from conflict zones around the world. He climbed mountains with smugglers in Pakistan for This American Life, descended into illegal mineshafts in the Democratic Republic of Congo for Marketplace's "Working" series, and lugged his accordion across Afghanistan on the trail of the "Afghan Elvis" for NPR's Radiolab.

Warner's radio and multimedia work has won awards from Edward R Murrow, New York Festivals, AP, PRNDI, and a Sigma Delta Chi award from the Society of Professional Journalists. He has twice won Best News Feature from the Third Coast International Audio Festival in 2009 and 2012.

Warner earned his degree in English at Yale University. He is conversant in Arabic.

Can you fight terrorists the same way you battle ordinary criminals?

A prominent Kenyan crime fighter, Mohamud Saleh, is betting you can. He's testing his theory in Garissa, a city in northeastern Kenya thrust into the spotlight this April when Islamist militants attacked a campus dorm, killing 147 students.

Long before Garissa had a terrorism problem, it had a problem with bandits, as Daud Yussuf, a Kenyan journalist, remembers.

Taylor Swift may be the world's No. 1-selling artist, but she might have a hard time getting airplay in some countries.

In South Africa, 55 percent of the content on radio stations as well as community and public TV has to be local.

Nigeria has a law that more than 70 percent of the music played on radio must be by local artists.

Africa will mark one year without polio on Tuesday. The last case was in Somalia in 2014.

But last week, a polio vaccination campaign in Kenya faced an unlikely opponent: The country's Conference of Catholic Bishops declared a boycott of the World Health Organization's vaccination campaign, saying they needed to "test" whether ingredients contain a derivative of estrogen. Dr. Wahome Ngare of the Kenyan Catholic Doctor's Association alleged that the presence of the female hormone could sterilize children.

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The billboard that President Obama will see when he exits the airport in Nairobi on Friday says: "Welcome Home, Mr. President."

Obama's Kenyan roots have been a source of pride, but at times a source of discord, too, in the land of his father's birth.

For example, when Barack Obama won the U.S. presidency in 2008, Kenyans were ecstatic. His victory was declared a national holiday.