According to Larry Dilsaver, author in the Geographical Record Note, as far back as 1921 scientists like Ellsworth Huntington have used these open spaces for research. He studied giant Sequoias in the General Grant National Park, where he pushed a book on the tress (Dilsaver 1). Throughout the centuries people like Thomas and Geraldine Vale studied vegetation in Yosemite in 1994 and David Butler researched natural hazards in Glacier National Park in 1989 and 1998 along with many more (Dilsaver 1). It is important to study these places not only to attain more knowledge on the subject one is researching; but these parks can help scientists protect natural processes, endangered species and can help measure for environmental change. In national parks, like Yosemite and Glacier National Park, many environmentally destructive activities are banned. This allows for scientists to compare the human impact on natural systems outside of the parks with those that are protected and can be monitored for comparison (Dilsaver 2). Moreover, the ability for scientists to study the relationships between evolving natural systems in their natural environment is almost unprecedented for the growth of scientific knowledge. National parks promote and preserve scientific research; but they also have the ability to have an educational impact for those who are not …show more content…
When it comes to historical preservation more than 100 of the 391 units have a historical background (Dilsaver 5). When one thinks of a national park their mind usually goes to that of Yosemite, Central Park, or some small park nearest them. Unfortunately, many Americans do not realize that battlefields and historic buildings fall under the protection of the national park service. When it comes to preservation parks of nature are a major entity but also historical landmarks. According to Dilsaver national parks offer a wide variety of educational experiences: “…national parks offered lectures, guided hikes, and museum displays designed not only to teach about the resources but also to inculcate environmental awareness, patriotism, and even spiritual morality” (Dilsaver 4). Besides the educational opportunities that these national parks provide they also offer moral ones that only nature can