11,000 year old mine in underwater cave surprises archaeologists
In the spring of 2017, a pair of divers shimmied fin-first through a narrow passageway in a water-filled cave beneath
Read moreIn the spring of 2017, a pair of divers shimmied fin-first through a narrow passageway in a water-filled cave beneath
Read moreTidewater glaciers, the massive rivers of ice that end in the ocean, may be melting underwater much faster than previously
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