/tags/zebra-mussels zebra mussels en-US Copyright Fri, 20 Apr 2018 15:43:37 GMT /news/2018-04-20/u-s-senate-blocks-law-weakening-great-lakes-regulations Environmentalists are praising the U.S. Senate for blocking a measure loosening shipping regulations on the Great Lakes 鈥� and making it easier for鈥� Fri, 20 Apr 2018 15:43:37 GMT /news/2018-04-20/u-s-senate-blocks-law-weakening-great-lakes-regulations Dave Rosenthal