Jillian Mackenzie Contributor Share this page Share this page block Share this page block Share this page block Jillian Mackenzie has been an editor and writer for 20 years, including a 12-year stint at Allure magazine. Related content See all Skip carousel items Protecting Our National Parks for Another 100 Years August 24, 2016 ExplainerUnited StatesJillian Mackenzie If we don’t address these increasingly severe threats, America’s most treasured lands might soon be unrecognizable.