1.) Is there enough food to feed the world's nine billion people?
2.) Pesticides used legally by homeowners are turning up in California rivers.
3.) The Pentagon wants to crowdsource military intelligence and research.
4.) The future of global transportation: luxury eco-zeppelin airships.
5.) In an effort to modernize, the U.S. Army is dropping bayonet skills from basic training.
This post was originally published on Smartplanet.com