This week, Chris Smith and Clarence Ford tackle the big science questions of the week, including how to perform a circumcision safely; can our eyes pop out when we sneeze; how do general anaesthetics work and do we understand consciousness; is violence inherent to society; do antibiotics kill probiotics; and…

Why do dogs make a beeline for underwear and smelly socks? Also, do we really get taller at night, why do some colours reflect and others absorb light, does our skin get thinner as we age, and what's the basis of lisps and accents? Dr Chris Smith and Amy Maciver…

Are any people particularly susceptible to alopecia-linked hair loss? Also, what causes eczema and why does it keep recurring, why are the progeny of different species infertile, why does hair go grey but not always symmetrically, and Is asthma a risk factor for bronchitis? Plus, are zebras actually black with…

In Ask! the Naked Scientists, Dr Chris Smith answers listeners' medical questions. This time, what causes a black eye? How can we alleviate the pain from a trapped nerve? How can you best stop severe bleeding? Why is sickle cell anaemia more common in Africa? Like this podcast? Please help…

Is an elephant really a close relative of a hyrax? What are blood groups? Is there really such a thing as a selfish gene? How did males and females evolve? What makes us feel sleepy? And how can chickenpox be lethal? Join Dr Chris and Clarence Ford as we ask…