diff --git a/Pentaradio_2009.mw b/Pentaradio_2009.mw
index 13d64f40..fef5048f 100644
--- a/Pentaradio_2009.mw
+++ b/Pentaradio_2009.mw
@@ -9,6 +9,7 @@
 ==Hack des Monats==
 * [http://twitter.com/TheMime Twitter's Silent Star]
 * [http://www.adbusters.org/blogs/blackspot_blog/unclick_google.html Adbusters Suggests Click Fraud As Protest]
+* [http://blog.wired.com/wiredscience/2009/03/donutsolar.html How To Make a Solar Cell with Donuts and Tea]
 
 ==Softwarepatent des Monats==
 * [http://yro.slashdot.org/article.pl?sid=09/03/09/005720 IBM Wants Patent For Lotus Notes-Free Meetings]