More DW Blogs DW.COM

The GLOBAL IDEAS Blog

Thinking for a cooler world

Klaus Esterluß |

MuschelCC

Zebra Mussel - CC BY-SA 3.0 by GerardM, wikipedia.com: http://en.wikipedia.org/wiki/File:Dreissena_polymorpha.jpg

Zebra Mussel – CC BY-SA 3.0 by GerardM, wikipedia.com: http://en.wikipedia.org/wiki/File:Dreissena_polymorpha.jpg

Date

March 21, 2014

Share

Feedback

Write a Comment

Leave a comment