The annual migration of monarch butterflies is one of science's great mysteries: millions of monarchs know the correct path even though they have never made the long journey themselves. As 60 Minutes found, the expedition to watch the migration can be its own challenge.
By
Brit McCandless Farmer
Updated on: July 19, 2026 / 7:01 PM EDT
/ CBS News
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The 10th anniversary of the International Monarch Monitoring Blitz is happening this summer from July 31 to Aug. 9.
"After years of decline, butterfly populations are rising—for now."
