A new study finds butterfly populations in the US have dropped 22% since 2000 due to pesticides, habitat loss, and climate change. Scientists warn the decline could have major consequences for ecosystems.

The butterfly population in the U.S. fell 22% over the last two decades, research shows. Watch Next . Could the ocean be our solution to climate change?

(March 12, 2025)

America’s butterflies are disappearing because of insecticides, climate change and habitat loss, with the number of the winged beauties down 22% since 2000, a new study finds.