now melissa gemma, thank you very much for that. they are the symbol of the beauty of nature, but perhaps not for much longer. new studies suggest humans are causing the butterfly populations to decline rapidly. rob reynolds has a story from the sanchez, a moderate post schmidt. everything shall product flashing whatever we call it. the butterfly is one of the most beautiful and beloved beings in all creation. and a major new study shows we humans are steadily and inexorably destroying them. things are not looking good. we've seen a decrease in butterflies of all sorts. widespread common, 22 percent decrease. so for every 5 butterflies that we've had over the past 20 years, we only have 4 now. the study covers the united states between the years 202020 butterflies and other insects have been in trouble for years. but the decline seems to be accelerating scientist. point to 3 primary causes widespread use of insecticides in industrial, agriculture, and against past loss of habitat, destroying the food sources and seasonal nesting are