The monarch’s 3,000-mile migration is one of the most epic and dangerous journeys on Earth. Each fall, butterflies born in Canada and the U.S. navigate south to the same Mexican fir groves that sheltered their parents and great-grandparents. But habitat loss and extreme weather are pushing this iconic traveler toward the edge—raising urgent questions about whether the migration can survive. Read the full story: https://on.natgeo.com/48vyJzk | National Geographic

The monarch butterfly completes one of the longest and most mysterious migrations on Earth, and it happens almost entirely across the United States. Every year, millions of monarchs travel from Canada and the northern U.S. all the way to central Mexico, covering up to 3,000 miles — yet not a single butterfly completes the full round trip. Here’s the mind-blowing part: The monarchs that return north are great-grandchildren of the ones that left. No GPS. No leaders. No parents guiding them. Yet th