Ernie and Erica Wisner are two people who know a lot about making things with their hands. They like to teach other people how to make things too, like buildings and stoves that use fire to cook food. They are very good at it and they have written books and made videos to show people how to do it. They also like to live in a way that is good for the Earth, like using things that are natural and not harmful to the environment. They have lots of experience and they love to share what they know with others.