Monarch butterflies are still in the middle of their story – and it’s one that is precarious. Humans are still trying to figure out a lot about them, and aspects of the monarch story have been misrepresented over the years.
Research:

Robert Moses and the Shaping of New York, Part 2
42:12

Robert Moses and the Shaping of New York, Part 1
41:59

SYMHC Classics: Eradication of Smallpox
43:25