Tiny Furnaces: The Physics of Monarch Survival in Winter
May 8, 2026
LIVE at 3:00 PM ET / 2:00 PM CT / 1:00 PM MT / 12:00 PM PT
LIVE at 3:00 PM ET / 2:00 PM CT / 1:00 PM MT / 12:00 PM PT
Presented by Sebastian Valesco
Each winter, millions of monarch butterflies gather in Mexico’s high-elevation oyamel fir forests, surviving on a delicate balance of temperature and energy. Join Expedition Leader Sebastian Velasco to explore the science behind this remarkable phenomenon, where butterfly behavior becomes a lesson in thermodynamics. Learn how monarchs regulate heat through clustering, movement and daily rhythms, and find out why this unique forest ecosystem is the only place on Earth they can survive the winter. Follow their journey from migration to spring departure and discover simple actions that can help support monarchs along their route.
Each winter, millions of monarch butterflies gather in Mexico’s high-elevation oyamel fir forests, surviving on a delicate balance of temperature and energy. Join Expedition Leader Sebastian Velasco to explore the science behind this remarkable phenomenon, where butterfly behavior becomes a lesson in thermodynamics. Learn how monarchs regulate heat through clustering, movement and daily rhythms, and find out why this unique forest ecosystem is the only place on Earth they can survive the winter. Follow their journey from migration to spring departure and discover simple actions that can help support monarchs along their route.
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PO Box 3065 · Boulder, CO, USA 80307
303-449-3711 International · 800-543-8917 U.S. & Canada
PO Box 3065 · Boulder, CO, USA 80307
303-449-3711 International · 800-543-8917 U.S. & Canada