Museum of Science on Instagram: "How do monarchs complete a 3,000-mile journey with no prior experience? 🦋 Each fall, millions of monarch butterflies fly from the U.S. and Canada to a single forest in central Mexico. This epic journey is powered by a rare “supergeneration” of monarchs that delays aging through a process called diapause, allowing them to survive for months and complete the voyage. #Monarch #Migration #Butterfly #Biology #Science"

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