Why do we blush?

Chris Smith from The Naked Scientists takes on YOUR questions with Eusebius McKasier from Talk Radio 702. Would a brain transplant keep someone's memories? Why do we blush? Is it bad to exercise when ill? How do you lose a sense of smell? Can it return? What is the difference between IQ and EQ? Why do we have three sets of DNA? With some questions from the BIO conference in Philadelphia.