Commonly known as milkweed, Asclepias is a genus of herbaceous, perennial plants in the Apocynaceae (dogbane) plant family.

The last five decades have not been good to insects. During this 50-year period, pesticide use and climate change have shrunk ...

Changing the definition of “harm” in the Endangered Species Act would remove habitat modifications and imperil vulnerable ...

Did you know that monarch butterflies traverse the Volunteer State on their seasonal migration? Read on to learn when they'll be in Tennessee.

You'll get access to an ad-free website with a faster photo browser, the chance to claim free tickets to a host of events ...

We spoke with Victoria Burnett, a Visitor Services Manager working for the U.S. Fish and Wildlife Service to get some insight ...

These shots from the Smithsonian Magazine Photo Contest show just why butterflies have floated into our hearts ...

Monarch butterflies have begun fluttering across Michigan after a migration that began in Mexico. The brightly colored ...

Monarch butterflies are a "canary in the coal mine." They are an indicator of things to come if we don't protect the delicate species.

Butterflies are some of the most beautiful insects in the world. With so many different species and variations, butterflies ...

The first Western monarchs typically arrive in Utah by May and lay eggs on milkweed (Asciepias speciosa) every 30 days beginning in June.

Well, most folks who celebrate it nowadays call it May Day. Beltane is the ancient Druid holiday that comes on the first day of May and marks the halfway point of astronomical spring. So that ...