U.S. EPA @EPA
Scientists from @EPAGreatLakes recently set off aboard the @UMNDuluth R/V Blue Heron to conduct sampling for the #EPA Great Lakes National Program Office’s annual water quality monitoring program. Check out the gorgeous sunset they saw near the Keweenaw Peninsula. #LakeSuperior https://t.co/rJd2mjddMz — PolitiTweet.org