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A cluster of monarch butterflies at Cerro Pelon Sanctuary in Mexico

Monarch butterflies at Cerro Pelon Sanctuary in Mexico (Photo: Ana Moreno)

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Eastern Monarch Population Decreased in Winter 2023–24

“Every year, World Wildlife Fund (WWF)–Mexico, in collaboration with the National Commission of Protected Natural Areas in Mexico and the WWF-TELMEX Telcel Foundation Alliance, monitors the area occupied by monarch…

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Photo of Karen Oberhauser, UW–Madison Arboretum director

UW Arboretum Director Karen Oberhauser Announces Retirement

Karen Oberhauser, director of the University of Wisconsin–Madison Arboretum since October 2017, has announced that she will retire from the Arboretum and the university in late November.

“We are very…

Monarch Butterflies Are Now Endangered. Here's How You Can Help.

As the only butterflies known to make a roundtrip migration like birds do, migratory monarch butterflies are used to traveling. Those that live in the Midwest migrate thousands of…

Monarch Butterflies Have Been Declared Engangered. What Can We Do to Save Them?

Ayesha Rascoe speaks with conservation biologist Karen Oberhauser about why the migratory monarch butterfly was just declared endangered, and what can be done in response.

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