Butterfly populations have dropped by 22% across 554 recorded species in the United States, according to a new study in the journal Science. "Our national-scale findings paint the most complete -- and ...

A team of scientists has discovered that descendants of "exploratory" butterflies that colonized new habitats differ genetically from their more cautious cousins. The team, led by James Marden, a ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER (KDVR) — In the last 20 years, ...

A study compiled data from more than 76,000 butterfly surveys across the continental U.S. The declines seen in the last 20 years alarmed researchers.