Why do people open their mouths when they apply mascara?
Ask the Naked Scientists · Dr Chris Smith
6. juni 2014 22m
0:00 22m
Beskrivelse
Are mothballs poisonous? How do chameleons change colour? Where do seedless varieties of fruit come from? What is ash? How can we use DNA to trace ancestry? Why do people open their mouths when they apply mascara? What causes a stammer? Like this podcast? Please help us by supporting the Naked Scientists
