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 concerning--picture of the status of butterflies across the country in the early 21st century," the study said. The study, titled" Rapid butterfly declines across the United States during the 21st century," counted 12.6 million butterflies, analyzed 76, 957 surveys and partnered with 35 monitoring pr