"I still don't believe it happened..."

What's it like to face the most famous clock on television? We chat to Oxford mathematician Dr Tom Crawford - best known as the creator of the award-winning 'Tom Rocks Maths' outreach programme - about what it was like to step into Rachel Riley's shoes on Countdown.

What's the best tactic for tackling the numbers round? How did he prepare? Did he really only have 30 seconds to find a solution? Tom gives us a glimpse behind-the-scenes of this British institution.

One in two people will be affected by dementia in their lifetime - whether that is as a patient, or somebody caring for a loved one. But what happens after a dementia diagnosis? Is there a clear pathway ahead? We chat to Jasmine Blane, a DPhil researcher at the Oxford Brain Health Clinic, about the work she is doing to help support patients in the midst of a dementia diagnosis, and into the future.

In popular culture, Tourette's syndrome is wrongly associated solely with outbursts of swearing in the context of lazy jokes. But in reality, the condition is far more complex than this stereotype suggests. When people without Tourette’s jokingly blame their lack of self-control on the condition, it spreads misinformation and invalidates those who actually live with it. Despite this, comedy - when created by those who experience stigma - can sometimes help challenge stereotypes and shift public perceptions. We chat with Dr Melina Malli from the Oxford Institute of Population Ageing to explore whether laughter can really be the best medicine.