Source: Tech – South China Morning PostBitcoin jumped above $39,000 after Elon Musk said Tesla would resume transactions with the cryptocurrency when mining is done with more clean energy.The electric-car maker will allow bitcoin transactions again “when there’s confirmation of reasonable (~50%) clean energy usage by miners with positive future trend,” Musk, Tesla’s chief executive officer, said in a tweet.His posting was in reply to a report in Cointelegraph, which cited Magda Wierzycka, executive chair of South African asset…Read More