Nobel Laureate Muhammad Yunus, who just turned 75, thinks of credit as a human right. Ben de la Cruz/NPR hide caption

Trevor Noah will appear in Santa Monica on Tuesday, then head to the U.K. for the Edinburgh Festival Fringe in late August. Don't worry, he'll be back in time for his debut as the Daily Show host. Michael O'Brian/Flickr hide caption

Here's the group of "teen advisers" who spoke with Goats and Soda at the 2015 Girl Up conference in Washington, D.C. Top row: Amy Gong Liu, Janet Diaz, Janet Ho, Kennede Reese, Rebecca Ruvalcaba. Middle row: Ruhy Patel, Celia Buckman, Simone Cowan, Jessica Bishai. Bottom row: Sydney Baumgardt, Alexandra Intriago, Anna McGuire, Ishana Nigam John W. Poole/NPR hide caption

First lady Michelle Obama shares encouraging words at Girl Up Leadership Summit. Molly Riley/AP hide caption

Girl Up activists are in the nation's capital — and talking with NPR today on Periscope. Last year's participants in the annual conference included (from left) Alexandra Leone (New Hope, Pa.); Grace Peters (Flemington, N.J.); Aklesiya Dejene (Chicago); Isabella Gonzalez and Erika Hiple (Stockton, N.J.). Ryan Kellman/NPR hide caption

Standing in their backyard in Cochas Grande, Peru, Katya and Blanca Cantos, hold the fruit of their labor. The gourd at left shows scenes from a potato harvest. The just-started gourd at right will tell the story of an ancestor's epic trek. Josh Cogan/Ralph Rinzler Folklife Archive, Smithsonian Institution hide caption

This is a photo taken in the town of Smell No Taste, where a teenager died of Ebola this past week. The home where he passed away is now under quarantine. Abbas Dulleh/AP hide caption

Children in Bangladesh display their birth registration cards. Jannatul Mawa/UNICEF hide caption

A little boy and his goat have an encounter with a painted lion in West Bengal, India. Courtesy of Partha Kar hide caption

Vietnam is seeing an increase in soda drinking. STEPHEN SHAVER/BLOOMBERG NEWS hide caption

Kenyan women visit an outreach team from Marie Stopes, a reproductive health organization that can screen for and treat cervical cancer. Jonathan Torgovnik/Getty Images hide caption

Screengrab from Sunflower Farm Creamery video. Sunflower Farm Creamery/Youtube hide caption