A comparison of brain tissue from monkeys, chimps and humans suggests that our brains produce the chemical messenger dopamine, which plays a major role in pleasure and rewards, far differently.
The Texas Republican said that he sent the photo to a woman he was in a consensual relationship with while separated from his second wife, and regrets not having used "better judgment."
For millions of Americans working in retail, Thanksgiving is the start to the most intense stretch of the year. One woman shares the story of her first Thanksgiving without a work shift in 23 years.
It's one of many varieties in Madagascar that are being studied as part of a project to bring better nutrition to people. And no, it's not the same as a sweet potato.
The Trump administration is considering asking about race and ethnicity in a radical new way on the 2020 Census. It could have far-reaching implications for redistricting and anti-discrimination laws.
In the latest NPR Politics Podcast, we explain why Democrats and Republicans are feeling so differently about the inevitable talk of politics during the Thanksgiving holiday.