In the ongoing aquatic battle between predator and prey species in Lake Superior, the latter were winning the war for years.Now — and for reasons scientists can’t pin down — prey fish species are losing that war.
In a bipartisan move, the U.S. Senate last week passed legislation that authorizes funding for the U.S. Coast Guard and, following years of debate, changes ballast water regulation by setting a national standard for discharges.
Common wisdom would tell you zebra mussels couldn’t live in Lake Superior because it’s an unproductive lake with frigid temperatures. But common wisdom might be wrong this time. When researchers started finding the mollusk nuisance not just surviving but spreading in the lake, they exhaled a collective groan.