Scientists calculated just how much U.S. butterfly populations have declined in the past 20 years. The results brought some ...

The population of butterflies - the beautiful insects that play a vital role in pollination and the health of ecosystems - ...

Butterflies are declining rapidly across the contiguous United States, including in Massachusetts. Research published in the ...

A study tallying 20 years worth of population figures for more than 500 butterfly species found that, on average, populations ...