zeitgeist - vertical farms and airships

A couple of my favorite ideas keep popping up. Do I love them because they are hip, or are they hip for the same reason that I love them?

Architects' renderings of vertical farms — hybrids of the Hanging Gardens of Babylon and Biosphere 2 with SimCity appeal — seem to be stirring interest.

(Article, via boing boing)

As the cost of fuel soars and the pressure mounts to reduce carbon dioxide emissions, several schemes for a new generation of airship are being considered by governments and private companies. "It’s a romantic project," said Mr. Massaud, 45, sitting amid furniture designs in his Paris studio, "but then look at Jules Verne."

(link)

On reflection, this is probably just what I get for reading boing boing. What is the deal with those guys.