National Park Service
It Was a Very Good Year
Waterton-Glacier International Peace Park includes whitebark pines that are over 1,200 years old, meaning they have been there since before medieval times. The second lesson of five details how to read tree rings for climate change and...
![Noaa: Be a Tree Ring Detective [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Noaa: Be a Tree Ring Detective [Pdf] Activity")
NOAA
Noaa: Be a Tree Ring Detective [Pdf]
Discover the reason why trees have rings. Then use your skills of inquiry to decide which tree samples are the oldest, based on their rings.