To begin with, We will take the Swiss Rodolphe Töpfer.

Klaus Töpfer is the executive director of the United Nations Environmental Programme.

Töpfer is out of the race nowadays, because he transferred in other domains.

Topfer replied that all agencies got a copy of the report.

Interview with Klaus Töpfer, UN Under-Secretary-General and environment expert

Guest speaker Prof. Dr. Klaus Töpfer and Dr. Erwin Wessling at the WESSLING Festforum

The Forum organizers are delighted to count Prof. Töpfer among their team.

One of those taking part is the distinguished former director of the UN's environmental program, Prof. Klaus Töpfer.

Topfer said that the report was published and that nothing was hidden from the public.

Topfer said that the report was published and that nothing was hidden from the public.

The organizers of the 5th World Water Forum are honored to welcome Prof. Klaus Töpfer as the official Forum Ambassador.

UNEP Executive Director Klaus Töpfer highlighted the historical significance of the moment.

The fact is that it is so powerful,” says Eric Töpfer of the German Institute for Human Rights.

I must thank you, Herr Toepfer, for the splendid act of imagination and generosity by which you instituted this award.

The head of UNEP, Klaus Töpfer, therefore speaks of “ecological aggression by the North against the South”.