Horizon Season 51 Episode 5 -

Airdate: 2012-Sep-03

Episode summary:

The series takes a look at the search for the smallest thing in the universe, a journey where things don't just become smaller but also a whole lot stranger.

About Horizon series:

Series exploring topical scientific issues and their effects for the future. Horizon is the BBC2 documentary that explores and educates us about co...Show more >