Why November is the most dangerous month for trains

Sponsored by Southeastern Railway. Are 'leaves on the line' really a problem for trains? I investigate the famous excuse with some ice skates, a jar of pectins and a blow torch. For more info from Southeastern: https://bit.ly/2CvBsLX Animations by Dom Burgess. His brilliant channel, Every Think, is here: https://www.youtube.com/channel/UCGI000V6ZIAQf97MNybAaLQ Patreon: https://www.patreon.com/stevemould Twitter: http://twitter.com/moulds Instagram: https://www.instagram.com/stevemouldscience/ Facebook: https://www.facebook.com/stevemouldscience/ Buy nerdy maths things: http://mathsgear.co.uk