Liz takes a look at the possibility that signals could disappear from the country's railways and how hearing impairment could be one of the bigger huggers on the network. Maggie reveals how a train travelling at 125mph is set to revolutionise trackside maintenance.

Bang Goes The Theory Season 8 Episodes...

• s08e01 - Energy
• s08e02 - Cancer
• s08e03 - Big Data
• s08e04 - Ageing
• s08e05 - Flu
• s08e06 - Flooding
• s08e07 - Trains
• s08e08 - Natural Disasters

Bang Goes The Theory Show Summary

Bang Goes The Theory sees Dallas Campbell, Liz Bonnin, Jem Stansfield and Dr Yan Wong coming up with ingenious ways of explaining the latest developments in technology.