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A member of his team tested positive for covid. the countrys entire delegation is now in quarantine. but alasdair rendall, whos president of the uk eurovision fan club, says poland could still take part in the contest. first we had electric lamps. then we had lasers. now, cambridge scientists are developing the next revolution in light that could change the world. they have developed a way of isolating and detecting single particles of light, called photons, at room temperature. that matters bec...

The vaccinations and the indian variant, we heard from the health secretary this morning that one person in hospital had both their jabs, but apparently, they were described as frail. whether that means they were frail before the had the jabs or before, —— after, i dont know. most of them are people who have had no jabs. it makes it quite difficult from your point of view without small evidence to assess what the risk is and how effective or not effective particular vaccinations may be again...

Ferocious second wave took hold. from the state of uttar pradesh, our international correspondent orla guerin reports. now, they must stand alone, without their father to guide them and with their grandmother, rajvati, crushed by grief. she tells us the election killed her son, sushil kumar. he was forced to attend election training. by voting day, he was gasping for breath. that night, he was dead. it was the very picture of a superspreader event, an election in a pandemic

Providing vaccines to some of the worlds poorest countries is being squeezed. as india continues its devastating battle against a raging outbreak, the countrys prime minister has temporarily banned exports of covid—19 vaccines so that all doses can be used in country. the serum institute of india was due to supply around half of the two billion vaccines for covax this year, but nothings been shipped since march, leaving a shortfall of around 140 million doses — which is due to rise to 190 mi...

Because of the continuing rules on social distancing. heres our business correspondent katy austin. getting the ball rolling again. this sites been shut for most of the past year. so if you could clean our new lane dividers, that would be fantastic. the team are in, making sure everythings safe and ready for customers. during the total period of lockdown, its cost us over 100 million in revenue. the boss of this chain believes people will flock back, but he says challenges remain that firms need...

Individual out individual photons, individual particles of light, and you can actually see them here, these bright yellow areas are the defects with the photons are coming out. this is where it gets weird. by singling out photons you can unlock what is known as the quantum world we are very, very small things behave very differently. you will need to pay attention to this bit. so there are two main properties that we can harness. the first one is superposition and the second one is entanglement....

Daughter and infant son. his wife, smriti, says he lived for teaching and was their sole breadwinner. his was a death foretold like so many more here, victims of covid, but also of negligence. the teachers�* union tried hard to get the election postponed, but in the end, it was powerless, like its members. 0rla guerin, bbc news, uttar pradesh, india. mountaineers and authorities at everest base camp in nepal have told the bbc they are seeing increased numbers of climbers with covid—19 sympto...

Individual light particles. ill explain why thats important in a second, but first, heres how they do it. on this disc here, you cant see it, is a crystal that is one atom thick and its got little defects on it the size of an atom, and when you fire a laser at those defects, they ping out individual out individual photons, individual particles of light, and you can actually see them here. these bright yellow areas are the defects where the photons are coming out. this is where it gets weird. by ...

When we put these two effects together, we can build something like a quantum computer which is in orders of magnitude more powerful than anything that we can compute today. you then need matthews sensors to detect them. so, what about practical uses? the quantum world is the only place you can generate genuinely random numbers — the team is now building a quantum random number generator to encrypt things securely online. we are at the start of the quantum revolution, if you like. this is goin...

For most of the past year. if we could clean our new lane dividers, that would be fantastic. the team are in, making sure everythings safe and ready for customers. during the total period of the lockdown, its cost us over 100 million in revenue. the boss of this chain believes people will flock back, but he says challenges remain that firms need help with. with regards to the pent—up rent bills and rent demands, a business like ours, weve worked very closely with a lot of our landlords, but th...