Cast
Almost 7.5bn people share our planet -- how do we deal with environmental challenges? Each month Eco Solutions meets the people finding answers to some of our green problems.
28 December 2011
5 March 2020
4 July 2016
2 March 2023
13 September 1994
26 March 2024
1 October 1999
1 January 2022
4 August 2022
20 September 2020
9 September 1972
2 July 1990
20 June 2025
25 January 2023
7 January 2011
16 September 2005
18 April 2016
9 February 2017