As Harvard University’s Arnold Arboretum prepares for its annual Lilac Sunday, senior scientist Dr. Peter Del Tredici takes Living on Earth host Steve Curwood on a tour to demonstrate how acid rain and climate change are affecting the arboretums’s plants and trees.
The story you just read is not locked behind a paywall because listeners and readers like you generously support our nonprofit newsroom. Now more than ever, we need your help to support our global reporting work and power the future of The World. Can we count on you?