Francisco Ramirez, a sexual-health educator, offers free advice to a passerby. Christopher Gregory for NPR hide caption

itoggle caption Christopher Gregory for NPR

Retired California school teacher Mikkel Lawrence sits with his cat, Max. Lawrence has hepatitis C and has struggled to afford the medicine he needs to treat it. April Dembosky/KQED hide caption

itoggle caption April Dembosky/KQED

Medical ethicist Harvey Fineberg says "neo-evolution" is on the horizon. James Duncan Davidson/Courtesy of TED hide caption

itoggle caption James Duncan Davidson/Courtesy of TED

"We can harness our bodies' own abilities that are kind of kept under wraps to allow the aging process to be slowed down." - Biochemist Cynthia Kenyon James Duncan Davidson/Courtesy of TED hide caption

itoggle caption James Duncan Davidson/Courtesy of TED

"Things that only have a 50% chance of happening 20 years from now are supposed to sound like science fiction." - Aubrey de Grey Robert Leslie/TED hide caption

itoggle caption Robert Leslie/TED

TED Radio Hour

Aubrey de Grey: Can Aging Be Cured?

Cambridge researcher Aubrey de Grey argues that aging is merely a disease — and a curable one at that.

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Sabas Sanchez Jr. was better known among his neighbors in Madison, Neb., as "Gordo" — Spanish for chubby. He also had an oversized personality. His father keeps this tattered photo in his wallet. Bobby Caina Calvan/Heartland Reporting Project hide caption

itoggle caption Bobby Caina Calvan/Heartland Reporting Project

Various food items that contained trans fats in November 2013. That month, the Food and Drug Administration first announced plans to ban partially hydrogenated vegetable oils from all food products. A final rule is expected any day now. Scott Olson/Getty Images hide caption

itoggle caption Scott Olson/Getty Images

When J.D. Falk was dying of stomach cancer in 2011, his wife says doctors would only talk about death in euphemisms. Hope Arnold hide caption

itoggle caption Hope Arnold

Village chiefs, residents and government officials take to the streets to celebrate the Chienge district's accomplishment of bringing sanitation to every home. Mark Maseko/Courtesy of UNICEF Zambia hide caption

itoggle caption Mark Maseko/Courtesy of UNICEF Zambia

This fungus among us — baker's yeast, aka Saccharomyces cerevisiae — is useful for more than just making bread. iStockphoto hide caption

itoggle caption iStockphoto