Kroto displays a model of his discovery in 1996: a soccer ball-shape carbon molecule that spawned a new field of study and could act as a tiny cage to transport other chemicals. Michael Scates/AP hide caption

itoggle caption Michael Scates/AP

In Boston, Edmund Hassan, a deputy superintendent of emergency medical services, and his colleagues regularly revive people who have overdosed on opioids. Jesse Costa/WBUR hide caption

itoggle caption Jesse Costa/WBUR

The World Series of Poker main event in Las Vegas in 2014. When Annie competed in this event, just 3 percent of the entrants were women. AP hide caption

itoggle caption AP

"My brain used to be my best friend," says Greg O'Brien, a journalist with early onset Alzheimer's. But he can't trust it anymore, he says. Alzheimer's is, in some ways, changing who he is. Amanda Kowalski and Samantha Broun for NPR hide caption

itoggle caption Amanda Kowalski and Samantha Broun for NPR
James Duncan Davidson/TED
Marla Aufmuth/TED

Matt Damon portrays an astronaut who relies on science to survive on a hostile planet. Giles Keyte/EPKTV hide caption

itoggle caption Giles Keyte/EPKTV

A surgical team at Sooam Biotech in Seoul, South Korea, injects cloned embryos into the uterus of an anesthetized dog. Rob Stein/NPR hide caption

itoggle caption Rob Stein/NPR