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 ...

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

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, ...

Monarch butterflies from the western United States have arrived in Santa Cruz and other parts of the California Coast, clumping in the thousands on branches of Monterey pine, coastal redwoods and ...

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

Some California cities have oddly specific rules, including some in Monterey County. Here are some of the oddest the state has written into law.

Ultra-light tracking tags are being deployed for the first time locally on Western Monarch butterflies to monitor how and where ...

Second lady Usha Vance gives USA TODAY an exclusive look at the Christmas decor at the vice president’s residence and talks ...

At Texas A&M, scientists are studying how geography, wind and roadside habitat shape monarch butterfly journeys. The routes ...

Second lady Usha Vance gives USA TODAY an exclusive look at the Christmas decor at the vice president’s residence and talks ...

Donate Life California and the DMV on Thursday honored two organ donors for their lifesaving gifts. They will be featured as ...