内容摘要："The time points we've identified suggest that changes in human societies such as new clothing material or living in larger groups may have allowed Borrelia recurrentis to jump vectors and become more lethal, an example of how pathogens and humans have co-evolved."

"The time points we've identified suggest that changes in human societies such as new clothing material or living in larger groups may have allowed Borrelia recurrentis to jump vectors and become more lethal, an example of how pathogens and humans have co-evolved."

"At the moment it's being used as a platform to sell things that may not be safe. They [TikTok] do need to do more," he said, "There's a lot of people making a lot of money, great side hustle, but they're putting people at risk."Dr James Cooper, deputy director of food policy at the Food Standards Agency (FSA), which is responsible for food safety in England, Wales and Northern Ireland, said: "Wherever people buy their food, it needs to be safe and what it says it is.

"Food businesses in the UK must be registered with their local authority and follow food law. All food businesses have a legal responsibility to sell safe food and provide allergen information."The FSA website says that if food is sold online or over the phone through "distance selling" then allergen information must be provided at two different stages in the order process.This usually means providing allergy information in the online description and then also on the packaging so a buyer has two opportunities to check if their allergy could be triggered.

"It was going great until it fell apart." Richard Varvill recalls the emotional shock that hits home when a high-tech venture goes off the rails.The former chief technology officer speaks ruefully about his long career trying to bring a revolutionary aerospace engine to fruition at UK firm Reaction Engines.

The origins of Reaction Engines go back to the Hotol project in the 1980s. This was a futuristic space plane that caught the public imagination with the prospect of a British aircraft flying beyond the atmosphere.

The secret sauce of Hotol was heat exchanger technology, an attempt to cool the super-heated 1,000C air that enters an engine at hypersonic speeds.The suspect, a white Irish man in his 20s, is understood to have fired the shotgun a number of times as he walked through the centre.

He was then witnessed exiting the centre and was confronted by armed, plain clothed officers. He later died from a self-inflicted gunshot wound.At a press conference on Monday, Assistant Commissioner Paula Hilman said no one was injured by the shots discharged, but a young girl suffered a minor leg injury after falling while running from the scene.

"This was meant to be a normal day out on a bank holiday weekend," she said."This was a terrifying experience for every person that was present in the Fairgreen Shopping Centre yesterday evening."