Tech Insider
Daniel and Katherine Ray standing in front of a pile of hay.
Daniel and Katherine Ray run Spiritwood Natural Building, a business that offers workshops teaching people how to build sustainable cob houses.
Tech Insider
A house made from earth and dirt rises from the ground in the distance, behind a lush, green vegetable garden.
The exterior of the completed cob house and the garden.
Tech Insider
Ebonn stands in her completed kitchen in a pink stripped shirt and white pants
Ebonn Twilley inside the 85-year-old South Carolina cottage she spent two years renovating into an Airbnb.