Nine monarch caterpillars that emerged late in the season would have faced certain death had an Evergreen Park man not ...

An international collaboration to track individual monarchs kicked off this fall, including James Madison University.

For the first time in California, citizen scientists can join the effort to track monarch butterflies thanks to Blu+, a new ...

Four community-based enterprises in Mexico's Monarch Butterfly Biosphere Reserve are seeking to reach the global market. By ...

Van der Heide got her start at Cal Poly, tagging monarchs by numbering their wings in Sharpie and trying to find them later ...

The monarch butterfly (Danaus plexippus) population has plummeted by 80% to 95% since the 1990s, depending on the region and ...

The tags weigh just 60 milligrams — about three grains of rice. Researchers have tagged more than 400 monarchs this year and ...

Monarch butterflies inspire awe through migrations that span thousands of miles across North America—a cycle repeated ...

Last season, 60 Minutes witnessed the migration of monarch butterflies. Scientists are now using tiny, solar-powered radio ...

Students at K.O. Knudson Middle School have successfully convinced Las Vegas Mayor Shelley Berkley to sign the Mayor's ...

Wearing dark sunglasses, long sleeves and a wide-brimmed hat, Florida retiree Linda Cooper came prepared to gaze at butterflies in 90-degree weather Thursday ...

Protecting Monarchs - Texas makes progress with steps to keep Monarch butterflies from being killed by cars during migration ...