Have you ever noticed that when you cross a busy road, as well as clocking the traffic, you subconsciously follow what your neighbours do? Scientists have recently put a figure on this and worked out that we're 2.5 times more likely to cross if our immediate neighbour makes a move to cross. Richard Hollingham goes to Leeds to meet the researcher behind the study to find out why we have such kamikaze tendencies, and how the research helps us understand shoaling, herding and flocking behaviour. Later on, we get up close and personal with banded mongooses in Uganda. Hear what the researchers... Like this podcast? Please help us by supporting the Naked Scientists