Add Yahoo as a preferred source to see more of our stories on Google. Extreme heat, one of many symptoms of climate change, is making monarch butterflies vulnerable to parasites, according to a ...

The monarch butterflies are making a comeback. For decades, the monarch butterfly population has been declining. Their winter ...

A monarch butterfly is ready to emerge from its chrysalis in the Kalispell garden of one of landscaper Kathy Ross' clients last August. (Photo by Kathy Ross) A monarch butterfly caterpillar, about two ...

In this week's Science for All newsletter, Divya Gandhi explains how milkweed is a toxic treat for monarch butterflies ...

The viceroy butterfly is a mimic, modeling its orange-and-black colors after the queen butterfly, a bug that tastes so disgusting predators have learned not to eat it or anything that looks like it, ...