Edmund Schulman in the 1950s had been studying trees under great stress at Timberline, and came to the realization that he put in an article in Science magazine called, "Longevity under Adversity in Conifers."
Edmund Schulman, in anii 50 a studiat acei copaci care se aflau sub presiune in conditii adverse si si-a dat seama ca ca ii poate prezenta intr-un articol, in revista "Science", articol intitulat " Longevitatea coniferelor in conditii adverse"