Scientist Claire Rutledge of the Connecticut Agricultural Experiment Station places parasitic wasps in Sleeping Giant State Park in Hamden in an effort to slow the spread of the emerald ash borer. Jan Ellen Spiegel / CTMirror.org
Scientist Claire Rutledge of the Connecticut Agricultural Experiment Station places parasitic wasps in Sleeping Giant State Park in Hamden in an effort to slow the spread of the emerald ash borer.