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

This important study shows that different forms and mixtures of cardenolide toxins in tropical milkweed, especially nitrogen- and sulfur-containing types, change how monarch caterpillars eat, grow, ...

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

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

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

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

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