Ask the Naked Scientists

What causes sleep paralysis? Is urine beneficial to drink? Can we clone from fossils? How can galactic collisions occur? What is the difference between Bipolar and PTSD? Can carnivores eat other carnivores? Plus the first ever in vitro sperm genesis. Like this podcast? Please help us by supporting the Naked Scientists

How old are the Homo naledi remains? How do nails end up in tyres to cause punctures? How did the H. naledi people see in the dark cave where the remains were found? Can vitiligo be reversed? Why were the H. naledi remains deposited in the Rising Star Cave? Like this podcast? Please help us by supporting the Naked Scientists

Does the intensity of the sun influence water evaporation, what reasons could there be for a sudden drop in heart rate, how do fixed drug erruptions work, if you stop water from expanding will it still freeze, by keeping sick people alive are we getting weaker as a species, does a full moon energise water, as a species do we have physical limits, how does a headless chicken run and how does a greasy breakfast help a hangover? Like this podcast? Please help us by supporting the Naked Scientists

Is DNA set to replace the harddrive? Chris told us about a story where DNA could be used to store digital information and preserve essential knowledge for thousands of years. We then opened the lines and invited listeners to call in with their science related questions. Like this podcast? Please help us by supporting the Naked Scientists

The Naked Scientist told us about a possible universal flu vaccine that is being researched. We then opened the lines to listeners to call in with their science related questions. What happens to a full container of water when you freeze it? Why does it seem to get colder at day break? Do our bodies use 70% of the energy we consume even when we are not active? Should I eat for my blood type? How does a cockroach survive being cooked in a microwave? Why can sheep and goats not mate? Is it beneficial to take molasses if you are anaemic? What causes gravity? If evolution is true, why are we not... Like this podcast? Please help us by supporting the Naked Scientists

How do humans generate body heat, how does rice fix a waterlogged phone, how does a thermos flask store hot water without expanding from the steam, why don't airplanes gain height when flying strait, why do people lose consciousness if the cabin pressure is lost on a flight, does a slipstream ever help the lead cyclist, why don't people bleed out if their leg is amputated and what causes corrugations on roads Like this podcast? Please help us by supporting the Naked Scientists

Why do we get nosebleeds? Can you use a sonic boom as a weapon? Is it healthy to sleep under a blanket? What will happen when the sun dies? Why does staring at light help you sneeze? Can a loss of memory cause hearing problems? Like this podcast? Please help us by supporting the Naked Scientists

Are intelligent people more prone to depression? Will we ever exceed the speed of light? What can survive inside a human stomach? Can rhymes help you to learn new things? How is the brightness of a light measured? How do bikes steer? Are balding men more prone to prostate cancer? Plus, eye drops that can treat cataracts. Like this podcast? Please help us by supporting the Naked Scientists

Why does the placebo effect work? Why do we get goosebumps? Why does scratching relieve itches? How can you fix bad breath? Why is it hard to wee if someone else is there? How long does food stay in the stomach? Plus, why screams are scary. Like this podcast? Please help us by supporting the Naked Scientists

Do tall people swim faster? Why is Cholera so difficult to kill and get rid of? If there's so much cell regeneration in our bodies, why do we get old and die? Does food affect your mood? Plus, new research into medical marijuana. Like this podcast? Please help us by supporting the Naked Scientists