The Kratts must solve the mystery of why most of the trees in a North American forest are dying.
Past Broadcasts
- Tuesday, November 28 from 6:30 a.m. - 7:00 a.m. on OPB TV
- Monday, April 2 from 6:30 a.m. - 7:00 a.m. on OPB TV
- Monday, April 2 from 5:00 p.m. - 5:30 p.m. on OPB TV