1 dating method, 3 ecosystems, many clues to pace of climate change
![](https://s3.amazonaws.com/medill.wordpress.offload/wp-media-folder-medill-reports-chicago/wp-content/uploads/sites/3/2022/11/Mono-tufa-feature-photo.jpg)
By Grace Finnell-Gudwien Medill Reports Inside caves, lakes and corals, small crystals dot the landscapes and scaffold into majestic pillars up to 4 meters high. These cream- to brown-colored crystal formations not only look beautiful, but they also provide paleoclimate scientists with a time capsule peering into the past — almost as far back as […]