To build a history of how Earth’s climate has changed over centuries, you need something long-lasting that’s been around the whole time—long-lived trees, or cores from ice in Antarctica and Greenland that has built up over the years, or maybe gravestones.
Gravestones? They’re actually ideal candidates, standing in one place and receiving little touch or attention from the living. If you’ve ever tried to read inscriptions in an older cemetery, you know what the elements can do to the stone as atmospheric gasses dissolved in the rain wear it down. But to some climate scientists, the amount of wear is raw data attesting to the climate history of the area.
Naturally, volunteers are asked to follow local regulations, laws and customs when visiting graveyards, and they may need to seek permission from land managers before collecting data from these sites. Also, graves are sacred places for many in the community, and volunteers are asked to not walk on, disturb or damage a grave or gravestone in any way.
There you have it: Being dead is no excuse for not contributing to science.
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Image: flickr / spratmackrel