Oh No! Global Warming Is Affecting Beer Production

treehugger.com — Now There's a Rallying Cry The quality of Saaz hops, which are required to make pilsner lager, has been decreasing lately, and climatologist Martin Mozny of the Czech Hydrometeorological Institute thinks he knows why: Global warming. Indeed, Saaz hops are delicate and the higher air temperatures in the Czech Republic are affecting them negatively.. Sep 15, 2009 View in Crawl 4