Programme Index

Discover 11,128,835 listings and 281,699 playable programmes from the BBC

Secrets of our Living Planet

Episode 2: The Secret of the Savannah

Duration: 1 hour

on BBC Four

Global nature series. Chris Packham reveals how the world's spectacular grasslands flourish despite being short of one essential nutrient - nitrogen. Show more

BBC Four

About BBC Four

BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.