The iconic monarch butterfly is declining across North America. You can help make a difference by providing the species with its food plant: milkweed. A monarch butterfly gliding over a field on ...

The hotter conditions produced more potent toxins in the milkweed. But the researchers said that surprisingly, the parasitic ...

Climate warming can impact plant quality, which in turn shapes the nutrition and immune defense of insect herbivores like ...

Retired schoolteacher Tachi Dellinger pointed inside a mesh box, where three green chrysalises hung. “This one is starting to change color,” Dellinger said. “It will turn jet black ... when it's ready ...

Monarch butterfly populations have nearly doubled this year, an annual survey of the species found. At the end of each summer, the beloved pollinators migrate from southern Canada and the northern and ...

SAN DIEGO — U.S. Fish and Wildlife Service has proposed listing monarch butterflies as a threatened species and has considered some possibly contradictory ways to protect them, Nicholas Storer, vice ...

Monarch butterflies could potentially be listed on the U.S. Fish and Wildlife Services’ list of threatened species. Officials will open a 90-day public comment period that could help determine whether ...

NORFOLK — A few weeks ago at The Hague School, environmental biology and chemistry teacher Karen Spencer, along with a crew of parents, planted beds of milkweed, which is the sole host plant for ...

Professor Elizabeth Crone, Department of Evolution and Ecology, checks a non-native milkweed in the San Francisco Bay Area for monarch butterfly eggs and caterpillars. Known for long-distance ...

Pacific Grove is known as ‘Butterfly Town USA’ for its role as an overwintering spot. As the insect’s population plummets, residents are coming to its rescue ...

With its charismatic appearance and awe-inspiring migrations, it's not surprising that the monarch butterfly motivates gardeners to provide extra care for these pollinators in their gardens. These ...