The nearly one-trillion-tonne block of ice was calved from Antarctica’s Filchner ... “It looks like a towering wall emerging from the ocean, stretching from horizon to horizon,” he said.

An curved arrow pointing right. Engineers at Japan's Fukushima nuclear power plant have designed an "ice wall" to stop the spread of radiation into the groundwater. Produced by Maya Dangerfield.

Plant operator Tokyo Electric Power Co. froze the soil to create an underground ice wall to divert the groundwater toward the ocean and away from the damaged reactor buildings where the liquid can ...