Original air date: 6 February 2013
Above is a timeline of how the programme progresses
Elephants using an underpass
Constructing a road right between the elephants and their food
The underpass works for the elephants to go from their night place and their food
The elephants only needed a few hours to recognise the underpass as a safe way between their home and their food. On the left are a few going foraging, on the right is one of them going back home.
An attempt to stop the Sahara desert spreading south is to grow a wall right across Africa
