Like many things in India nowadays, the science of vaccine approval has also run into the politics of chest-thumping nationalism. Alongside authorising Covishield, the Covid-19 protection developed by Oxford University and AstraZeneca Plc and manufactured by the Serum Institute of India Ltd, the country’s drugs regulator gave a go-ahead to an indigenous vaccine for which critical phase three trial data ...

Twitter doesn’t have an edit button. Despite a chorus of protest over many years, the company has declined to bow to user demand — indeed, as Covid-19 raged, Twitter trolled its 330 million users with this taunt. This absence of edit mirrors a range of controversial Twitter innovations — including switching the “validation” button from a star to a heart; ...

In the eyes of many Bitcoin advocates, scarcity is a key advantage over more conventional assets. Unlike fiat money, which can be created from nothing on a bank’s balance sheet, or gold, which can be mined from the ground in quantities still far from being exhausted, the supply of Bitcoins was set from the start at 21 million. That means, ...