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Summer this year is hitting Greenland hard with record-shattering heat and extreme melt. By the end of the summer, about 440 billion tons of ice -- maybe more -- will have melted or calved off Greenland's giant ice sheet, scientists estimate.
FULL SHOW: 'Jihadi Jack' speaks • Suspects leave message • SNC-Lavalin scandal • Climate change warning • Prince Andrew scandal • Questions about fluoride • Sharing Sam's story
Hundreds of thousands of pro-democracy demonstrators packed a park and filled major roads while marching in Hong Kong.
Kayakers are lucky to be alive after a glacier collapsed metres away, creating a huge wave of water and ice in a split second.
Footage from an Alaska kayaking trip shows a sudden and up-close look at part of a collapsing glacier.