There are common names associated with the civil rights movement, like Rosa Parks and Martin Luther King Jr. And there are lesser-known names like Charles Moore. His photos, which often appeared in Life magazine in the 1960s, are the ones that put faces to a movement for most Americans. He died last week at age 79.
In this archival footage from BBC TV, celebrated physicist Richard Feynman explains what fire, magnets, rubber bands (and more) are like at the scale of the jiggling atoms they’re made of. This accessible, enchanting conversation in physics reveals a teeming nano-world that’s just plain fun to imagine.