Monarch butterflies are making their flight north after wintering in Mexico. Here's what to know about the fascinating, fragile traveler.

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 ...

From a distance, they appear like autumn foliage: millions of endangered monarch butterflies blanketing ... experience” was like “watching souls flying above.” “It’s so many feelings ...