Submitted by JanniesStopBanningMe t3_10a3gaj in askscience
tim36272 t1_j46e9g2 wrote
Reply to comment by mfb- in Since the world is getting warmer, is the arctic treeline being pushed back? by JanniesStopBanningMe
The concern is acceleration: if it's 40-50m horizontally per year now then it could be 400-500m per year in 20 years.
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