they developed their own crypto currency called citicoin.hey created three separate block coins for tests. they say this is a way to eventually civil fight cross-border transactions. now to be crisis increased -- this price the -- crisis in greece. one athens started managed to raise $4 million. the company focuses on delivering localized contest for businesses and hopes to double its engineering team in greece by the end of the. other startups not so lucky. many are using prepared american -- prepaid american credit cards to pay their bills. coming up, what the world's biggest electronic maker needs to do to turn itself around. we'll talk about what is next for samsung. and what it's like to snap a go pro onto a great white shark. will talk about this shark week. ♪ emily: a story we are watching -- investors fleeing from all things china, even in the u.s. china stocks plunging the most in four years. at one point, alibaba doubled -- tumbled. both rebounded, but closed significantly lower. beijing has been trying a handful of options to try