Why Are Large Sinkholes Opening in the Arctic Seabed? - EcoWatch

Something unusual is happening in the depths of the Arctic ocean: sinkholes are opening up on the seabed, some as large as a city block!

Something unusual is happening in the depths of the Arctic ocean: sinkholes are opening up on the seabed, some as large as a city block!  This discovery, published in the Proceedings of the National… [+3099 chars]

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