3/3 The expedition culminates in South America, where the puma's hunting behaviour is filmed. (R)
1/6 Sal an Mara looks at the lives of those dependent on and influenced by the sea. (R)
2/3 How plastics brought luxury to the masses and could help rebuild the human body. (R)
6/18 Exploring the emergence of dangerous strains of bacteria resistant to antibiotics.
3/3 A massive North Sea ferry undergoes the biggest overhaul of its 25-year service. (R)
BBC One Wales only
Tuesday 11 September 2012