From towering mountains to pebbles along a river, the Earth is made of a huge variety of rocks. In today's episode, we're going to follow the rock cycle of a piece of granite in the Himalayan mountains, and as you'll see, every rock has...

In 1903, US President Theodore Roosevelt took a camping trip in California's Yosemite Valley with conservationist John Muir. Roosevelt famously loved the outdoors, but Muir had invited him for more than just camping: Yosemite was in...

By nearly every metric, Donald Trump's vision is wrong, the United States of America is already great. This data-driven analysis shows why.

Howcast - Learn about Cliff Simanski, one of Howcast's indoor rock climbing experts, in this video.

These images show how quickly Earth’s environment can change, from shrinking lakes like the Aral Sea to melting glaciers and wildfires in Yellowstone. Human actions like farming, building dams, and digging for oil are also changing...

Yosemite is one of America’s most beautiful national parks—but it also has a rich history! In this episode, we’ll learn about the Native American tribes who lived in the Yosemite Valley for thousands of years. We’ll also discover how...

Yosemite National Park, California, USA:"And we will end our trip by taking excursions in California, United States in a walk through the Yosemite National Park, climbing the Tunnel View, one of the most famous sites of the park, which...

Mountains of North America locates major mountain ranges found in North America by using a map or globe.

The video “National Parks” discusses how national parks were established and highlights six important national parks located in the American West.

March 1867 - A factory accident renders 28 year old John Muir blind. He lies in a darkened room for six weeks in the hopes of regaining his vision. His sight restored, Muir vows to follow his dreams of exploration. Settling in San...

Park staff and planners hosted an online webinar on August 5, 2020 in order to share information about the Ackerson Meadow Restoration Project and provide an opportunity for the public to ask questions.

When Joseph Walker passed through in 1833, there were none, but today, thousands of maps portray Yosemite National Park. From a land grant created during the Civil War, to modern computer mapping, these maps also tell the story of the...

This webinar focused on sharing information with park stakeholders about the Sugar Pine Bridge Hydrologic Study underway in Yosemite Valley. It was presented at the May 2017 stakeholder webinar.

The Blue Jay Fire started on July 24th, 2020 and burned into winter. It was a natural ignition lightning fire that the park managed for resource objectives under a confine and contain strategy. In this video, Battalion Chief Russell...

In this video, a ranger describes easy hikes in Yosemite Valley to Bridalveil Fall, Mirror Lake, and Lower Yosemite Fall.

In this video, a ranger describes moderate hikes in Yosemite Valley, including, the Valley Loop Trail, the trail to the Vernal Fall Footbridge, and Columbia Rock.

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...

Throughout the winter, the elevation where rain turns to snow changes with each new storm. Join a meteorologist and park scientists as we chase the snow line in Yosemite.

Former Historical Architect George Jaramillo worked for the branch of History, Architecture and Landscapes within the Resources Management and Science Division. Originally from Miami, Fla., he joined the park staff in 2008 with previous...

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.

Historically, mountain yellow-legged frogs thrived throughout the Sierra Nevada, but today these endangered amphibians are found in only a handful of locations. Restoration efforts in Yosemite are helping protect what was once the most...

Take a microcosmic safari through a field of milkweed and discover a whole world of life, from bees to wasps to hummingbirds to butterflies. The charismatic monarch butterfly is completely dependent on milkweed for its survival, and...

Yosemite Falls is the tallest waterfall in North America, and is a powerful presence in Yosemite Valley. From winter ice to spring flood to autumn dryness, this magnificent waterfall is a dynamic force of nature.

As we celebrate the centennial of the National Park Service, we look back to 1916 and the life of Stephen Mather, the first Director of the National Park Service.