Enough about endangered species — Massachusetts next month is beginning the country’s most ambitious effort to save common plants and animals. More than 20,000 people, including school kids, are expected to take part in a three-day “bioblitz” to create a town-by-town inventory of every species living in the state that is bigger than a one-millimeter dot. Peter Alden of the state Executive Office of Environmental Affairs said, “This isn’t counting mosquitoes and dandelions. We’re just trying to note these species’ existence in towns. Endangered species were once common somewhere.”
