Sustainable Development in Kenya
James Macharia is Cabinet Secretary of the Ministry of Transport, Infrastructure, Housing, Urban Development, and Public Works of Kenya. You may follow him on Twitter @JamesMacharia_.
The Water Challenge
Brice Lalonde is President of the French Water Academy. He was Under-Secretary-General of the United Nations and Executive Coordinator of the 2012 Rio+20 conference. He is also a former French Ambassador for Climate Negotiations and a former French Environment Minister (1988-1992). You may follow him on Twitter @bricelalonde.