The shifting pattern of milkweed growth is a result of a changing climate, and it could reduce the monarch butterfly population and impact its ability to thrive.

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in ...

Under a canopy of twinkling city lights and illuminated butterfly wings, A-listers meandered to Discovery Green for the ...

Photographer and National Geographic Explorer Rena Effendi learned that a little-known species was named after her late ...