Stories by Holger Dalkmann

This post originally appeared on National Geographic’s “City Solutions” blog.

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The need for action on sustainable transport has never been more apparent than it is today.

This piece was co-authored with Daniel Bongardt, Transport Policy Advisor with the German Technical Cooperation (GTZ).

WRI’s experts will continue to provide commentary and analysis of t

Ten years ago, world leaders convened in Johannesburg to establish the eight Millennium Development Goals (MDGs), global strategies designed to end

This interview was conducted by Itir Sonuparlak and originally appeared on