Canary in the Cornfield: Why the Fuss about Monarchs?

Nature Conservancy - Science

With a range that covers the United States, watching monarchs was once a shared cultural experience, but that is changing fast. No scientists are arguing that monarchs will go extinct, but numbers are dwindling at an alarming rate. Unfortunately, the overwintering sites are still threatened by extreme weather events and climate change. A surprising threat to monarchs from climate change has to do with the way that they navigate. Milkweed and Changes in Agriculture.

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