Dead Zones

Kirchman, David L. (Maxwell P. and Mildred H. Harrington Professor of Marine Studies, Maxwell P. and Mildred H. Harrington Professor of Marine Studies, University of Delaware)

Het Nationale park De Hoge Veluwe

Menno Haanstra e.a.

Factor Five

Ernst-Ulrich Von Weizsacker & Michael H. Smith & Charlie Hargroves & Cheryl Desha

Buigen of Barsten