Rory Cellan-Jones explores two industries - one old, one new - trying to "green up" their operations.| BBC News
A warning on NatWest's banking app warns customers to beware of cryptocurrency scams.| BBC News
Jake got addicted to trading cryptocurrency and lost more than £1m of money that was not his.| BBC News
The price of Bitcoin fell below $34,000 for the first time in three months after China imposed fresh curbs.| BBC News
The initial decision made by Tesla in March to accept Bitcoin caused an outcry from environmentalists.| BBC News