“What could a Stormtrooper's armour be made of?” and “Could a slug grow to the size of Jabba the Hutt?” BBC Click Radio presenter Gareth Mitchell answers your Star Wars questionsAf Immediate Media

“How do waterfalls freeze?” and “Why do people cheat?” BBC Click Radio presenter Gareth Mitchell answers life’s big questionsAf Immediate Media

“Why do bananas make fruit ripen faster?” and “How can we make cars more energy efficient?” BBC Click Radio presenter Gareth Mitchell answers life’s big questionsAf Immediate Media

“What caused the Big Bang?” and “Why do we have wisdom teeth?” BBC Click Radio presenter Gareth Mitchell answers life’s big questionsAf Immediate Media

“Why doesn't a Cadbury Flake melt in the microwave?” and “What happens to old aeroplanes?” BBC Click Radio presenter Gareth Mitchell answers life’s big questionsAf Immediate Media

“Is there any scientific explanation for hypnosis?” and “Why does tape screech when you peel it off?” BBC Click Radio presenter Gareth Mitchell answers life’s big questionsAf Immediate Media

“Why are bees in decline?” and “Do phones get heavier with each download?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

“What is the biggest known star?” and “How do fans make you feel cooler?” BBC Click Radio presenter Gareth Mitchell answers life's big questions Image credit: Haktarfone/WikiAf Immediate Media

“Why do cats like boxes?” and “Why do people lie?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

“How did the zebra get it stripes?” and “Can lightning occur in space?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

“Can money bring you happiness?” and “How does Rosetta stay in orbit?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

“Do plants have a form of consciousness?” and “Can you teach empathy?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Daniel Levitin reveals how to cope with information overload; Polly Morland delves into the subject of riskAf Immediate Media

“Can lightning strike upwards?” and “What is the wettest place in the world?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

“Why do jokes become less funny?” and “Can science explain near-death experiences?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Randall Munroe answers some absurd questions; Danielle George reveals what’s in store for this year’s Royal Institution Christmas Lectures; Jim Al-Khalili explores the strange world of quantum biologyAf Immediate Media

“Is the amount of matter in the Universe infinite?” and “What’s the best way to brush your teeth?” BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Caleb Scharf discusses Earth’s place in the cosmos; Karlheinz Meier describes his quest to simulate the human brainAf Immediate Media

"Why don’t butterflies fly in straight lines?" and "Is the right side of your brain really more creative?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Can consciousness be switched on and off?" and "Why do planets not twinkle?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Does photosynthesis occur in moonlight?" and "What’s the best way to treat insomnia?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Sally Davies discusses the problem of antibiotic resistance; James Levine explains why your chair is killing youAf Immediate Media

"Why do people behave differently in a crowd?" and "How did dinosaurs mate?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Gaia Vince describes her adventures in the Anthropocene; Richard Dunn celebrates the 300th anniversary of the Longitude PrizeAf Immediate Media

"How many potentially hazardous asteroids are there?" and "Why do accidents happen in slow motion?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Is the Great Wall of China really visible from space?" and "Why do we get used to smells?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Why do birds fly in formation?" and "Is anything actually 2D?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Can a moon have a moon?" and "Is it possible to harness the power of falling rain?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Which part of the brain generates dreams?" and "What are subatomic particles made of?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

What’s That Sound? In this one-off quiz special, the Focus team guesses some of the weird sounds that feature in Trevor Cox’s new book Sonic WonderlandAf Immediate Media

"Are biscuits addictive?" and "What happens when two black holes collide?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Why do goats have such good balance?" and "Where is the fastest broadband speed in the world?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Eric Schlosser reveals how close we’ve come to nuclear Armageddon; Paul Bloom discusses whether we’re all born with a sense of moralityAf Immediate Media

"Do wasps serve any useful purpose?" and "Are there more stars than grains of sand?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Explorer Ben Saunders prepares for his historic trek to the South Pole; psychologist Eldar Shafir explains why having too little of something can mean so muchAf Immediate Media

"Is it better to play the same lottery numbers every time?" and "How many photos are uploaded every day?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Stuart Clark takes us on a magical mystery tour through the history of the Universe; David Epstein explains what makes Usain Bolt so speedyAf Immediate Media

"Do carrots really help you see in the dark?" and "How do computer viruses work?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Adam Alter explains how colours affect our behaviour; John Bradshaw discusses the strange science of catsAf Immediate Media

"Which came first - time or space?" and "Why do ducks and geese 'quack' in flight?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

Dr Hilary Jones talks through a day in the life of the human body; Daniel Loxton investigates the science behind Bigfoot and the Loch Ness monsterAf Immediate Media

"What is an itch?" and "Can you save fuel by slip-streaming other vehicles?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

UK astronaut Tim Peake talks about his upcoming trip to the International Space Station; Steve Jones reveals what science can tell us about the Bible; David Spiegelhalter discusses the strange statistics of everyday life Image credit: ESA–M. KoellAf Immediate Media

"Is love more likely to bloom in hot weather?" and "Can you get sunburnt through glass?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

"Are there storms on the Moon?" and "Why have we evolved to love the taste of unhealthy foods?" BBC Click Radio presenter Gareth Mitchell answers life's big questionsAf Immediate Media

James Watson celebrates the 60th anniversary of his DNA discovery; James Davies discusses some of the problems facing the psychiatry profession todayAf Immediate Media

"What colour is a mirror?" and "Could a brain transplant give you someone else's memories?" BBC Click Radio presenter Gareth Mitchell answers life's big questions.Af Immediate Media

Professor Alice Roberts comes face-to-face with Ice Age giants; miracle detective Dr Joe Nickell investigates the Turin ShroudAf Immediate Media

Brian Cox on his new series Wonders of the Universe; The big question: are we still evolving? And the verdict on the Nintendo 3DS.Af Immediate Media