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Cryptocurrency, especially Bitcoin, has been in the media a lot recently due to its price volatility and even more so due to its energy consumption. So what exactly is cryptocurrency and Bitcoin, why does it use so much energy and can this be solved?

NANO (NANO), unlike many cryptocurrencies, doesn’t rely on an energy-intensive mining, minting, or printing process. The coins, previously called RaiBlocks, were initially distributed via an online faucet, wherein everyday people could solve CAPTCHA ("I am not a robot") puzzles in exchange for coins.

Crypto evangelists – who believe a decentralised financial system is for the greater good – tend to ignore this inconvenient truth....

When Tesla chief executive Elon Musk said that the electric carmaker will no longer accept bitcoin as payment for vehicles...