Series exploring topical scientific issues
Share this with
This programme is not currently available on BBC iPlayer
There are no upcoming broadcasts of this programme
Mon 13 Apr 2015 01:30
All previous episodes
See all from 2011-2012
See all clips from 2011-2012
What’s your ‘tipsy’ point?
Find out which of these anti-hangover strategies could actually work
Celebrate 50 years of Horizon with this free downloadable ebook for tablets.