Tree rings are helping researchers pinpoint an exact date for the eruption of the Thera volcano: http://ow.ly/kNiX50zkusj @SmithsonianMag PNAS article: http://ow.ly/YApo50zkusk pic.twitter.com/MohWzrk4rb
![](https://bac-lac.wayback.archive-it.org/web/20200424185756im_/https://pbs.twimg.com/media/EWT3Ww5XkAIykjq.jpg)
12:01 PM - 23 Apr 2020
0 replies
5 retweets
10 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.