Soon after bitcoin (BTC-USD) startled investors with a rare drop below $30,000 last week, the cryptocurrency has rebounded dramatically in recent days, rising well above $40,000.
The sudden bounce back has cheered bitcoin bulls but also underscored a concern among critics that the volatility of the most popular cryptocurrency makes it useless for the buying and selling of goods.
Pavan Sukhdev, the president of environmental advocacy group WWF International and a former managing director at…
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