Curious Cases Folgen

"What is fire? Is it a solid, liquid or a gas? Why is it hot and why can you see it in the dark?" asks Hannah Norton, aged 10.Dr Fry visits the Burn Hall at The Buildings Research Establishment in Watford where they test the effects of fire on building materials.Whilst Dr Rutherford gets to grips with Michael Faraday's pioneering Christmas Lectures at the Royal Institution of Great Britain on 'The Chemical History of a Candle'. Plus, he chats to forensic chemist Niamh Nic Daeid from Dundee University about our lasting fascination with fire.You can send your Curious Cases for the team to investigate to: curiouscases@bbc.co.ukPresenters: Hannah Fry, Adam Rutherford Producer: Michelle Martin.

"What's inside a black hole and could we fly a spaceship inside?" asks Jorge Luis Alvarez from Mexico City.Some interstellar fieldwork is on the agenda in today's Curious Cases. Astrophysicist Sheila Rowan explains how we know invisible black holes actually exist. And cosmologist Andrew Pontzen is on hand to help cook one up.But which of our intrepid doctors will volunteer to fly into the heart of a black hole?You can send your Curious Cases for the team to investigate to: curiouscases@bbc.co.ukPresenters: Hannah Fry, Adam Rutherford Producer: Michelle Martin.

"How on earth do cats find their way back to their previous home when they move house?" asks Vicky Cole from Nairobi in Kenya. Our enduring love for our feline friends began when Egyptian pharaohs began to welcome domesticated moggies into their homes. Pictured reclining in baskets at the feet of royalty, pet cats soon became fashionable throughout society in Egypt.Today they are the most popular pet in the world, and home is definitely where their hearts lie."Whereas dogs are bonded to people, cats are bonded to place," explains zoologist Dr John Bradshaw. "It's very typical for them to try and find their way back to their old house when you move."But how do they do it? And if their navigational skills are so good, why do they get lost?Plus, Prof Matthew Cobb reveals the super-senses that cats possess, which humans don't, and how to spot when your cat is deploying them.You can send your Curious Cases for the team to investigate to: curiouscases@bbc.co.ukPresenters: Hannah Fry, Adam Rutherford Producer: Michelle Martin.