The Enduring Mystery of Critchfield’s Spruce - The Changing Climate
Guest Author • Feb 17, 2021 •
Zach St. George The first and only time Steve Jackson spoke to Bill Critchfield was in the late 1980s. Critchfield, an authority on the conifers of North America, was at home recovering from a heart attack. Jackson, then a postdoctoral researcher at Brown University, had called looking for advice on how to tell jack pine from Virginia pine. Jackson … Read More