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.
The cost to block Asian Carp in the Chicago waterways system has increased to $778 million from a previous estimate of $275 million, the Army Corps of Engineers announced last week.
Remember Asian carp? They’re the voracious feeders that could threaten the balance of the Great Lakes ecosystem if a breeding population were to establish in the lakes.