Scientists valued monarch butterflies at up to $6.64 billion, yet their population just hit a near 30-year low. Here's the ...

The California State Parks Foundation is asking Californians to track sightings of western monarch butterflies to help save the dwindling insect population. The California State Parks Foundation, a ...

PACIFIC GROVE, Calif. (AP) — There is a ray of hope for the vanishing orange-and-black Western monarch butterflies. The number wintering along California’s central coast is bouncing back after the ...

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in California this winter, a foreboding sign for the future of the beloved ...

Barring a big change, monarchs that shelter along California's coast every winter will almost certainly die out within about 50 years. Although the U.S. Fish and Wildlife Service moved to protect the ...

Though some believe tropical milkweed is responsible for declining population levels of monarch butterflies, researchers at UC Davis show that the plant neither helps nor harms the charismatic species ...

There is a ray of hope for the vanishing orange-and-black Western monarch butterflies. The number wintering along California’s central coast is bouncing back after the population, whose presence is ...