As the population ages, some researchers think dementia cases will rise far less than projected.
In this episode, Katty Kay speaks with Dr Murali Doraiswamy, Professor of Psychiatry and Neurology at Duke University School of Medicine, about a phenomenon called the birth cohort effect. Each generation seems to be arriving at old age with a lower risk of dementia than the people born before them. But no one is exactly sure what is causing the decline.
Scientists are using cutting-edge technology to protect one of the world's most famous shipwrecks.
Phil Palumbo, of Palumbo Wealth Management, says hiking rates 'aggressively' would harm the US economy.
Seagrass may look unassuming, but these underwater meadows play a powerful role in tackling climate change.
BBC journalist Manuel Scheuernstuhl goes on the hunt for an authentic German pretzel in New York City.
London's Darjeeling Express is ground zero for chef Asma Khan, a champion of women's empowerment.
Aliko Dangote, the businessman behind Africa's biggest refinery, shares his vision for economic sovereignty.
Seacom's $2bn cable vision aims to strengthen Africa's role in the global digital economy.
Matt Orton, of Raymond James, says there are questions about how much capital Anthropic needs to keep growing.
Watch adaptive athlete Ollie Thorn take on the tough challenge of reaching Everest Base Camp by handcycle.
At 86, Lucinda Childs is still redefining modern dance by building intricate and mathematical work.
From monitoring hazards to assisting drivers, Tech Now finds out how AI can make driving safer.
For a carpenter in Antarctica no two days are the same as the extreme weather provides non-stop challenges.
Kelly Bogdanova, of RBC Wealth Management, says investors came into earnings season with the 'bar set very high'.
Leading tech CEO Hardy Pemhiwa tells the BBC how AI could transform Africa's digital landscape.
Founder and businesswoman Linda Mabhena-Olagunju explains what it takes to scale clean energy across Africa.
Underwater relics beneath Sri Lanka's coast are helping archaeologists piece together an ancient story.
Ed Moya, of AlphaSense, says rising borrowing costs are 'eating away' at AI companies' earnings.
From sonar scans to eyewitness accounts, discover why the Loch Ness Monster mystery refuses to fade.
George Schultze, of Schultze Asset Management, says he's worried about the massive debt taken on to fund AI.
The Travel Show meets a gelato pioneer blending artificial intelligence with Italian tradition.
