Monarch butterflies are beautiful backyard favorites—but they’re also toxic. Monarchs lay their eggs on milkweed plants, ...

Monarch butterflies are important culturally and ecologically across North America. Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and ...

Only three molecular changes are needed for fruit flies to digest milkweed toxins Gene-edited fruit flies have gained some of monarch butterflies’ superpowers — specifically, the ability to ...

Just a few years ago, the eastern monarch was considered endangered by the International Union for Conservation of Nature ...

The peak of the spring monarch butterfly migration in Texas typically occurs from late March to early April. See where on ...

Monarch butterflies are important culturally and ecologically across North America. Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and ...

In a turn of events, the eastern monarch butterfly population — which was put on the list of endangered species just a few years ago — nearly doubled this year, according to a March report ...