What science can tell us about the art of conversation – video |

Scientists at Dartmouth College in New Hampshire say they have discovered a telltale sign of an enjoyable conversation. Apparently the secret of a mutually satisfying chat is a healthy dose of pink noise. Guardian science editor Ian Sample tells co-host Madeleine Finlay how this concept usually associated with physics can be applied to conversation, and what the secret to pinkifying our chats could be.