ORONO, Maine, May 18 (TNSres) -- The University of Maine issued the following news release: More than 3,600 different species of bees are native to the U.S. Over the past century, their presence has significantly declined due to habitat loss, pesticide use and climate change. Up to 40% of pollinator species are at risk of extinction. Bees, moths, butterflies and other pollinators provide a key role in every ecosystem by assisting in plant reproduction and supporting the food chain. Without po  more