--inda: let me just ask you would you say that angela merkel's open-door policy has in fact paved the way for this rise in anti-semitism? have we imported the middle east conflict into the heart of germany? mr. michalski: the first question i would say -- not at all. the people we see here demonstrating are mostly people who came here a long time ago. , they areoliticized activists. hamas is behind these people. we see them regularly at anti-israeli demonstrations in berlin. we have to understand that these people are here in germany and we have to deal with them. but, what we have not dealt with educating young germans and muslims in a smart way -- kristin: german muslims. mr. michalski: mostly they are german muslims, to see this. the call of some conservatives, the party members here in germany to expel all foreign muslims is very shortsighted because it puts the finger only on a certain group which we have to deal with, of course -- kristin: which does not represent all of the muslims in germany. mr. michalski: also this. melinda: the effort to educate has been a part of effort in

is inda: sophie lu beijing with more. good to have you with us. how much power does bitcoin mining actually consume? sophie: according to our analysis, bitcoin mining consumption is not as much as some of the numbers floating around in the public's fear. -- public sphere. in china it is about 15.4 terawatts hours. the question i had when i was looking at your story was, why is most of this concentrated in china -- bitcoin mining? and why are regulators suddenly so concerned about this? sophie: there are several different factors. to begin with, bitcoin is a very hot industry in china. as some of their earlier quotes is ais -- indicated, there lot of interest in the market. in addition, a lot of these hardware supply chains, components that go into these theom computers that mine cryptocurrency, much of the supply chain is concentrated in china. therefore, it is easier to set up these large-scale mining facilities. another major factor, they have been undergoing a significant reform period. they have been liberalizing power prices in local regional

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