@CNN: Ice skaters recorded this frozen lake in Norway ‘singing.’ The unusual frequencies are often a result of changing temperatures shifting the ice. https://t.co/ZxQ5NuSfXV https://t.co/ZblASSQVnw

January 27, 2019 / The Arbiter / CNN

@CNN: Ice skaters recorded this frozen lake in Norway ‘singing.’ The unusual frequencies are often a result of changing temperatures shifting the ice. https://t.co/ZxQ5NuSfXV https://t.co/ZblASSQVnw

Ice skaters recorded this frozen lake in Norway 'singing.' The unusual frequencies are often a result of changing temperatures shifting the ice. https://t.co/ZxQ5NuSfXV pic.twitter.com/ZblASSQVnw

— CNN (@CNN) January 27, 2019

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