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the u.s. i'm max foster in london. just ahead on "cnn newsroom." >> it was absolutely stunning to hear this level of detail. >> one step closer to the truth of what happened to her. >> expected to be one of the largest packages. you're expecting them to be a tremendous amount of ammo in there. >> we have been providing our ukrainian partners with precisely what they need to defend their country, to defend their sovereignty. >> santos did set up a gofundme account and raised as much as $3,000 for this life-saving surgery. >> i know you didn't know you raised money for yourself. live...

Study greenland's vast ice sheet are issuing dire findings about rising temperatures in the arctic. they say temperatures are now the warmest they've been in at least 1,000 years. researchers have been studying a core samples drilled. ben weir explains why drilling into the thick, arctic ice is valuable to understand climate change. take a listen. >> reporter: as a result of studies that looked at core samples, looked at the tiny pockets of gas and all the layers of ice each year it snows and adds another layer. they can go back and the data gets longer and proves what a lot of scientists have...