[system]

Wading into a river and digging until you get to the slime, soil, dirt and other matter at the bottom may not be everyone’s idea of a good day out - but, in the right hands, a core of river sediment can become an eye-opening time machine into the past...
Read a transcript of the interview by clicking here
or [chapter podcast=3275 track=11.05.15/Naked_Scientists_Show_11.05.15_8495.mp3] Listen to it now[/chapter] or [download as MP3]