Ask the Naked Scientists

Do our digital lives leave us cognitively exhausted? Should we see a doctor when we are overly tired? How bad are processed foods for us? Is it safe to eat food you have dropped on the floor? Why do certain foods make us feel nauseous? And does laser hair removal work? Dr Chris Smith and Relebogile Mabotja have the answers. Like this podcast? Please help us by supporting the Naked Scientists

Why is Europe experiencing a heatwave? What happens if a being from a different dimension enters our dimension? Why are wombats able to produce square-shaped faeces? Can we live without sodium? Is there a scientific explanation for xenophobia? Why did the Lincoln Memorial Reflecting Pool turn into a green swamp? What causes early morning phlegm, even without a cold? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists

Why does our hair stand up when we are scared? Does the animal kingdom experience colour differently? How do cats purr without running out of breath? Can certain types of medication cause tinnitus? What benefits does vaccination afford us? And why do some people struggle to recognise faces? Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists

What's the impact of sodium on our heart health? Are there sounds around us that we can't hear? Why do teeth have nerves and a blood supply? What controls our emotions? Can other primates and mammals have colourblindness? Why can't certain organs regenerate themselves, whilst others can? Dr Chris Smith and Saskia Falken have the answers... Like this podcast? Please help us by supporting the Naked Scientists

Do dolphins and whales yawn? Is yawning contagious in animals? What progress has been made on brain chip implants? What is the difference between kidney thrombosis and renal vein thrombosis? Why does a falling slice of toast land butter side down, and does fall height matter? Is it unsafe to receive the wrong blood type? Why are birds adapted to have birdsong? What keeps all the water up in a cloud? Why can I feel my phone buzz in my pocket when it's actually on the table? And how to improve blood iron levels? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists