Im very interested in tech startups and tech in general and is aways happy when stories like this comes out:

Food Is The New Frontier In Green Tech

Also a really interesting 5 min video about growing vegetables etc more efficient:

BrightFarm Systems | The Urban Farms of Today - The Economist, 12 Decemeber 2010

EDIT: Also, the guy that wrote the articles website is really cool:

http://fixfood.uservoice.com