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The Covid pandemic may have impacted brain health in people in the UK aged 50 and over, according to a new study. More than 3,000 volunteers completed yearly questionnaires and online cognitive tests to measure changes in memory, and other faculties, as the pandemic unfolded.

An Australian woman has been arrested over the suspected mushroom poisoning deaths of three people. The trio had fallen ill after attending a family lunch in the Victorian town of Leongatha in July. A fourth person was taken to hospital in a critical condition.

The German president has expressed "shame" for the colonial atrocities his country inflicted on Tanzania. German forces killed almost 300,000 people during the Maji Maji rebellion in the early 1900s, one of the bloodiest anti-colonial uprisings.

Artificial intelligence is nearly twice as good at grading the aggressiveness of a rare form of cancer from scans as the current method, a study suggests. By recognising details invisible to the naked eye, AI was 82% accurate, compared with 44% for lab analysis.

Demis Hassabis, the co-founder of Google Deepmind, one of the UK's biggest AI firms, says the booming industry should not follow the same path adopted by the older tech giants. It was intended to encourage rapid innovation and company growth.

To play this video you need to enable JavaScript in your browser.BBC PoliticsBoris Johnson agreed with some Conservative MPs who thought Covid was "nature's way of dealing with old people", the Covid inquiry was told.

For retailers of all types, the winter holidays are the most wonderful time of year. In 2023 alone, the National Retail Federation (NRF) expects shoppers will spend around $900 (£743) each on purchases for Hanukkah, Kwanzaa, Christmas and other end-of-year festivities.

The company that licenses tours to New Zealand's White Island have been found guilty of safety lapses that led 22 people to die in a 2019 volcanic eruption. Whakaari Management, the final defendant in the case, will be sentenced in February.

A handful of sweets is as synonymous with Halloween as a spooky costume or a ghoulish pumpkin. But on 31 October 1858, this normally harmless treat killed several children, causing panic across Bradford and a rapidly rising death toll.

For travellers looking for inspiration for their next city break, dozens of best-of lists abound.

Image source, Matthew Lani/TikTokBBC NewsA TikTok star accused of falsely claiming to be a doctor has been arrested after trying to enter a hospital in South Africa.Matthew Lani garnered thousands of followers by sharing medical advice and selling medication online.

Technology teamThe White House has announced what it is calling "the most significant actions ever taken by any government to advance the field of AI safety."An executive order from President Biden requires Artificial Intelligence (AI) developers to share safety results with the US government.

Surera Ward has been running Girls Fix It, a tech repair service near Philadelphia, Pennsylvania, for around four years. In that time, she and her team have got better at understanding the electronic devices that come into their workshop. But fixing them hasn't.

Charles Denby says his job is simply all about trying to improve the taste of beer. For the millions and millions of lager and ale fans out there, these sentiments all sound great. But when you know what Mr Denby's US company actually does, things become a bit more divisive.

Isaria Anael Meli has been looking for his grandfather's remains for more than six decades. He believes the skull ended up in a Berlin museum after his grandfather, Mangi Meli, along with 18 other chiefs and advisers, were hanged by a German colonial force 123 years ago.

Love. That intangible, addictive, complicated emotion that is the essence of being human. Now just imagine if it was more straightforward. No more guesswork, no more doubt. What if? That tantalising prospect is the premise of Fingernails, the second solo film from Greek director Christos Nikou.

"We know where to look. We know how to look." That's what then Nasa's chief scientist Ellen Stofan said in 2015 when she predicted we might find alien life within the following 10 years.

More than 200,000 children are estimated to have suffered sexual abuse from Spain's Catholic clergy, an independent commission has found. The details emerged from an unprecedented public investigation by Spain's ombudsman, who spoke of the "devastating impact" on victims.

In August 1977, the police arrived at 284 Green Street in the north London suburb of Enfield. Peggy Hodgson, a single mother of four, reported that her two young daughters – Janet, aged 11, and older sister Margaret – had heard strange knocking. The source of the sound could not be determined.

On the Orion arm of the Milky Way galaxy, around 93 million miles (150 million kilometres) from the yellow dwarf star it orbits, is a medium-sized rocky planet. At the edge of a vast southern ocean, are the gently lapping waters of a hot-pink lake.

Senior Technology Reporters A year ago, having just bought Twitter, Elon Musk walked into its HQ carrying a sink. "Let that sink in" he quipped - then fired a large swathe of staff.

More than 50 years after The Beatles broke up, the band have announced the release of their "last song". Called Now And Then, it is based on a 1970s demo recording by John Lennon, and was completed last year by Sir Paul McCartney and Sir Ringo Starr.

The Turner Prize-nominated artist David Shrigley has pulped 6,000 copies of Dan Brown's best-seller The Da Vinci Code and republished them as George Orwell's novel 1984.