Tenet: Why we performed backwards and forwards

The number of cases are under control but more clean drinking water is needed, a charity says.

Greece is hoping European countries will adopt a Covid-19 vaccine certificate system to make tourism easier during the summer. A digital vaccination certificate would make travel smoother, Akis Skertsos, deputy minister to Greece’s prime minister explained. He told BBC World News: “We don’t think that this is discriminatory at all. Restrictions are already in place…

Romana Kreider looks at some of the best technology news stories of the week including: Two new foldable smartphones are unveiled by Samsung – the Galaxy Z Flip 3 and Fold 3 Cryptocurrency platform Poly Network lost over $600m (£433m) in one of the sector’s biggest ever cyber heists – the hacker has since returned…

The US diplomatic boycott of the 2022 Winter Olympics was not about lecturing China but about “standing up for human rights”, the US climate envoy has said. John Kerry told Stephen Sackur, of BBC News’s Hardtalk programme, that addressing climate change was so important, it should be kept separate from other areas where there is…

William Shatner has become the oldest person to go into space, as he blasted off aboard the Blue Origin capsule. After landing, the Star Trek actor said tearfully that the experience had been “unbelievable”. “Everybody in the world needs to do this,” he said. Three other individuals shared his journey on the rocket system, which…

BBC Click’s LJ Rich looks at the best of the week’s technology news stories including: Microsoft launches its latest operating system, Windows 11, as a free upgrade for Windows 10 users Star Trek actor William Shatner will go into space with Jeff Bezos’s space travel company Blue Origin A robotic arm which can recognise and…