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.
8 September 1984
27 March 2010
17 August 2007
8 September 1990
14 September 1990
19 July 2016
11 January 2004
5 May 2006
11 July 2014
2 August 2008
31 October 1992
4 August 1997
27 July 1998
7 September 1985
17 September 2013
22 January 2007
11 September 1992
10 September 1983
23 May 2011
9 February 2017