5 Things Happy People Do Happy people are resilient. Life knocks everyone down, but staying down only leads to misery. Happy people are open. Happy people know sadness is temporary. Happy people choose to be happy. Happy people fake it.
A House in 20 Hours. That was just what Behrokh Khoshnevis says he envisioned when developing Contour Crafting (CC), a concrete-extruding printer that can be used to build a single house in about 20 hours.