One night in 1984, British scientist Frances Ashcroft was studying electricity in the body and discovered the protein that causes neonatal diabetes. She says she felt so "over the moon" that she couldn't sleep.
By the next morning, she says, she thought it was a mistake.
But luckily, that feeling was wrong, and Ashcroft's revelation led to a medical breakthrough decades later, which now enables people born with diabetes to take pills instead of injecting insulin.
This is TELL ME MORE from NPR News. I'm Celeste Headlee. Michel Martin is away. Coming up, we're talking with Olympic gold medalist Gabby Douglas. We'll ask the flying squirrel how it feels in that white hot spotlight and what kind of sacrifices she made to get there.