Bitcoin dropped below $8,000 after news that US tech giant Google is going to ban cryptocurrency advertising. According to CoinMarketCap data, as of 05:25 GMT, Bitcoin fell by 14 percent to $7,909. At Bitfinex crypto-currency exchange trading platform, its value dropped by 13.8 percent to $7,847, at Binance — by 14.8 percent to $7,835. On Wednesday, Google said it would ban advertisements related...