The U.S. Department of Health and Human Services and the Food and Drug Administration jointly announced Tuesday a nationwide phase-out of petroleum-based synthetic dyes from the food supply, a bold ...

The butterfly population has declined for the tenth year in a row, and in 2024 it reached its lowest level since the start of ...

Biologists have long debated why some plants and animals can adjust to a wide range of climates, while others can't.

For thousands of years, millions of monarch butterflies have migrated from the northern U.S. and Canada to Mexico for the winter. But exactly how they know where to go is still a mystery.

Monarchs traveled to a remote part of Mexico, a journey they've made for thousands of years, and wintered there. Now tens of ...

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back ...