'We're entering unprecedented territory': sports expert Q&A on what Djokovic row means for unvaccinated elite athletes

Tennis star Novak Djokovic is out of the Australian Open after the country’s immigration minister, Alex Hawke, cancelled his visa “on the basis that it was in the public interest to do so”. This follows an earlier quashing of the original decision by Border Force officials to cancel the Serbian player’s visa when he arrived in Australia because he didn’t have a COVID vaccination.

Crypto countries: Nigeria and El Salvador's opposing journeys into digital currencies – podcast

Banking on bitcoin: El Salvador announced plans to build a Bitcoin City in November 2021. Rodrigo Sura/EPAWe dive into the world of crypto and digital currencies and take a close look at two countries approaching them in very different ways in this episode of The Conversation Weekly. And if the latest Matrix film has left you wondering whether we are really living in a simulation, we talk to a philosopher on the long history of that idea.

Why haven't petrol prices gone back down yet? A new business model might explain why

Petrol prices reflect lots of elements not just crude oil wholesale cost. Tomas K/ShutterstockAcross the UK the cost of filling up cars shot up in November when wholesale oil prices rose. But when crude oil prices went down again, costs at the pump did not drop back to previous levels. This has prompted UK motoring organisation, the RAC, to complain that drivers are being overcharged. So, what is going on?

Supply chains in 2022: shortages will continue, but for some sellers the problem will be too much stock

Everything was about shortages in 2021. COVID vaccine shortages at the start of the year were replaced by fears that we would struggle to buy turkeys, toys or electronic gizmos to put under the Christmas tree. For most of the year, supermarket shelves, car showrooms and even petrol stations were emptier than usual. Some shortages were resolved quickly, others linger. So are we facing another year of shortages or will the supply chain crisis abate in 2022?


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