1.) Hydrogen energy company HydroPhi Technology will establish its headquarters in Atlanta.
2.) A new iPhone app called CityMint allows urban residents to order takeout from a public park.
3.) Seven big-picture proposals for dealing with nuclear waste.
4.) How energy-efficient is your house? An infrared map can help reveal your home's thermal performance.
5.) GE is using nanotechnology and carbon capture to "green" the oil sands in Alberta, Canada.
This post was originally published on Smartplanet.com