There’s no magic fix in sight for the amount of energy gobbled by cryptocurrency miners – but at least the method used is relatively secure.
North Korea's cyber army is closely controlled by the ruling regime – a key difference from other countries' cyberattack and espionage groups.
Crypto billionaires enjoy their Caribbean playground but poorer locals with little knowledge of the tech are excluded.
Bitcoin is being compared to tulips, but I researched tulip mania for years and found no evidence of mass bankruptcies or economic meltdown.
While sovereign governments need to develop coherent frameworks to regulate cryptocurrency, permanent solutions will be found through international co-operation.
Australian regulators face similar problems as their Australian counterparts in getting cryptocurrency platforms to regulate and prosecuting them when things go wrong.
Cryptocurrencies encompass a wide range of technologies, communities and uses. Not all of them are taken seriously.
Blockchain is now helping to bring much-needed transparency to the global tuna industry, which has been prone to corruption, human slavery and unsustainable fishing practices.
The odds are that we get through 2018 without war, mass capital flight, or a housing crash. But all the risks are medium probability, and the consequences could be dire.
Interest among financial institutions in bitcoin derivatives contracts highlights worrying reminders of the not-too-distant past.
National cryptocurrencies could make payments faster and prevent crime, but they come with their own risks.
Brexit, bots and jobs and bitcoin are set to dominate economics news in 2018.
The extra energy used to mine and transfer Bitcoins may simply be a price the currency has to pay for being secure and anonymous.
The Pirate Bay is among those accused of using customers' computers to mine cryptocurrency.
Here in the business and economy team at The Conversation, we love charts. This year we've made plenty of good ones with academics.
Using metaphors for cryptocurrencies helps people feel more familiar with the technology. But there's a downside – we expect it to work just like regular money.
If Bitcoin is a bubble, it will be because its price rises are too great and can't continue. If it isn't, it will be because the Bitcoin market is still expanding. We just don't know which one yet.
Futures trading is driving up the price of Bitcoin but institutional investors remain cautious.
Allegations bring to the fore questions over the legitimacy of bitcoin – a sound investment tool or a massive scam?
Bitcoin has been viewed as a liberating path out of the corporate monetary system. But the process of 'mining' the cryptocurrency is a massive energy drain - and potential environmental disaster.