Kevin R. Henke has been critical of what research project conducted by the Creation Research Society and the Institute for Creation Research between 1997 and 2005?
Kevin Henke:  In particular, he has been critical of the RATE project's results, which claim to show that zircons contain too much helium to be billions of years old, and has argued that Russell Humphreys, a young-earth creationist who was involved in the project, has made errors in his research.
i don't know