I struggled to catch my breath, but it had nothing to do with the 10,000-foot altitude. All around me, millions of monarch ...

MEXICO CITY (AP) — The first monarch butterflies have appeared in the mountaintop forests of central Mexico where they spend the winter, Mexico’s Environment Department said Saturday. The first ...

MEXICO CITY, Mexico — The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this year, doubling the area they covered in 2024 despite the stresses of climate ...

MEXICO CITY -- The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this year, doubling the area they covered in 2024 despite the stresses of climate change and ...