The Christchurch (New Zealand) City Council has spent nearly $1 million in recent years trying to get a swarm of midges at its wastewater treatment plant under control.But residents of Aranui, a suburb of Christchurch, say they can’t open their windows and doors in the summer due to what’s being described as a “biblical plague” of insects breeding at the plant.The midge problem started a decade ago when plant improvements allowed cleaner water to enter its oxidation ponds — the largest body of freshwater in Christchurch.The council is investigating options for dealing with the swarm of midges, including any emerging
