Glaciers like the ones in Greenland are melting due to climate change, causing global sea levels to rise. That we know. But these glaciers are also moving. What we don't know is just how these two processes – melting and movement – interact and ultimately impact how quickly sea levels will rise. This encore episode, Jessica Mejía, a postdoctoral researcher in glaciology at the University of Buffalo, explains what it's like to live on a glacier for a month and what her research could mean for coastal communities all over the world.

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