In 1939, a wildlife biologist hiked 1,700 miles through Alaska's Denali to learn why sheep were vanishing; he found winter, not wolves, was to blame

Wildlife biologist Adolph Murie studied Dall sheep and wolves in Denali National Park. His research revealed severe winter weather caused the sheep population decline. Murie's findings showed wolves preyed on weakened sheep, not causing the overall decrease. This influential study shifted conservation focus to ecosystem-based wildlife management. Murie's work championed wilderness preservation and shaped park conservation policy.

In 1939, a wildlife biologist hiked 1,700 miles through Alaska's Denali to learn why sheep were vanishing; he found winter, not wolves, was to blame
Wildlife biologist Adolph Murie studied Dall sheep and wolves in Denali National Park. His research revealed severe winter weather caused the sheep population decline. Murie's findings showed wolves preyed on weakened sheep, not causing the overall decrease. This influential study shifted conservation focus to ecosystem-based wildlife management. Murie's work championed wilderness preservation and shaped park conservation policy.