China may be best known for its Great Wall, but it also has a series of walls, roads, towns carved into the sides of the Taihang mountain range. It’s a feat of will, perseverance and innovation — and connects communities once isolated by geography. This story is told by our Host James Chau. | The China Current

6.2K views · 60 reactions | No one is better at breaking down the art of sampling than hip-hop producer 9th Wonder. Watch him work on Kendrick Lamar’s Pulitzer-winning classic in the latest episode of our new video series, The Formula. npr.org/theformula | NPR Music | Facebook

3 samples. 3 genres. 3 generations. Watch 9th Wonder take us on a sonic journey while breaking down the trio of beats he produced for one Kendrick Lamar classic: “Duckworth.” | NPR

308K views · 24K reactions | My dad is trying to negotiate with me so I’ll go outside, but Cornelius is running interference because I’m not really feeling it. | Esther the Wonder Pig | Facebook