Yosemite National Park: Water is the life-blood of Yosemite National Park. The Tuolumne and Merced rivers water some of the most productive farmland on the Earth, and urban dwellers throughout the state depend on the Sierra Nevada snowpack for their domestic water needs.

Yosemite National Park: Throughout the Sierra Nevada, high flat plateaus are found at elevations around twelve and thirteen thousand feet. These isolated sky islands are the home to unique plant communities that are found nowhere else.

Yosemite National Park: Explore the Tuolumne River from its glacial headwaters at 13,000 feet down through Tuolumne Meadows and into the Grand Canyon of the Tuolumne. Scientists and rangers describe the power this river has on the landscape and on the people who visit it.

Yosemite National Park: Have you ever experienced, “The Wild?” What exactly is wilderness and what benefit do wild environments have for mankind? This video offers interesting perspectives on how spending time outdoors, particularly at Yosemite, positively affects people.

Yosemite National Park: From foothill elevations to high mountain peaks, hundreds of flower species are found throughout Yosemite National Park. Rangers and scientists discuss the rich botanical history and some of the rare plants found here.

Yosemite National Park: While most visitors come during the summer months, winter is a special time of year in Yosemite National Park. This video shows the beauty of the winter months at Yosemite.

Yosemite National Park: Most of Yosemite National Park is covered with vast conifer forests, and with abundant precipitation and warm temperatures, the park's mountains are home to some of the largest trees in the world.