US President Donald Trump and his Democratic challenger Joe Biden exchanged accusations of corruption in the final live TV debate ahead of the 3 November election. Mr Trump cited unsubstantiated claims Mr Biden personally profited from his son's business dealings. His challenger brought up the president's opaque taxes and a report about a secret bank account held by Mr Trump in China. The pair also clashed on race relations, immigration, the coronavirus pandemic and the future of Big Oil. As our North America reporter Anthony Zurcher notes, the threat of a mute button made for a more civilised debate than the last one - here are the best bits. "The candidates allowed each other to speak. They used respectful tones. Even when they went on the attack, they did so in a calm, deliberate manner," he says.

With the UK's seven-day average climbing ominously towards 20,000 confirmed coronavirus cases a day, we head into the weekend with millions more people subject to stricter limits to daily life . In Wales, people must stay at home from 6pm as the nation enters a "firebreak" lockdown, with pubs, restaurants, hotels and non-essential shops shut until 9 November. Supermarkets will be limited to selling essential goods. Overnight, Greater Manchester's 2.8 million people joined those in the Liverpool region and Lancashire in England's highest tier of restrictions. That means pubs and bars will be closed - unless serving substantial meals - along with casinos, bingo halls, betting shops and soft play centres. People are advised against travelling in or out of areas and banned from mixing with other households in gardens and outdoor hospitality venues. The same will apply to South Yorkshire folk from midnight. At the same time, Coventry, Stoke and Slough will move into the second tier of restrictions.

Could sewage provide an early warning system to detect local coronavirus outbreaks? That's the hope, as 90 wastewater treatment sites in England, Wales and Scotland start testing for fragments of the virus's genetic material. Scientists determined earlier this year that this material could be detected even when there were only asymptomatic Covid-19 cases in the community. Results of the analysis from sewage works will be shared with test-and-trace systems in England, Wales and Scotland - helping them focus on particular communities for extra attention and tip off local NHS services.

"Down the pan," is the Metro's verdict on the NHS Test and Trace system for England, after figures showed just one in seven people was being diagnosed within 24 hours. Added to that, only 60% of contacts are being reached, says the i. The Financial Times reports Chancellor Rishi Sunak's increasing support for businesses hit by the pandemic to the tune of £11bn, while the Daily Telegraph puts the figure at £13bn. Meanwhile, the Times reports concerns from tax officials that up to £2bn of the £39bn support intended for furloughed workers may have been "siphoned off" by organised criminals. Read the review.

Eighty-year-old Paul Harvey, who lives with dementia, became an internet sensation last month when his son posted a video of him playing compositions from memory. It prompted BBC Breakfast to reunite him with some of the former students he inspired - watch the emotional results. And have you heard about "the most wholesome thing on the internet"? That would be New Zealand artist Matthew Wills's lockdown creation, the character Quest Sprout, according to Reddit users. The cartoonist tells Newsbeat he thinks it's helping people get through tough times.

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