https://www.ethoscon.com/our-story
The history of Engineers in Technical and Humanitarian Opportunities of Service (ETHOS) can be traced back to 1999. Wanting to find a partner to investigate thermal efficiency in cookstoves, Dr. Mark Bryden from Iowa State University (ISU) contacted Aprovecho Research Center (ARC). ARC had published a study that had caught his eye, which showed that high mass stoves were often outperformed by the three stone fire when sheltered from the wind. In order to be able to perform this research, ARC was trained on how to conduct test stoves by Dr. Larry Winiarski using the International Testing Standards WBT 1987. This means they were well versed in conducting reputable cookstove tests, and beginning to use them to help projects develop better stove designs.