Discover the 'American Serengeti' Lewis and Clark first recorded

Explore Lewis and Clark's 8,000-mile journey in Google Earth.

Lewis and Clark identified 122 animal species new to science.

The expedition documented 240 plant species, 178 new to western science

Lewis and Clark’s botanical records introduced species to Americans like bitterroot, ponderosa pine, and Oregon grape—plants unknown to western science at the time. See a selection of these species in this image gallery.

Native voices share their histories along the Lewis and Clark National Historic Trail

Tribal historians recount their peoples' histories and perspectives on the Lewis and Clark expedition, offering an Indigenous narrative of the lands, encounters, and legacies that shaped the journey.

The Corps of Discovery braved wildlife, weather, and near-starvation

Along their 8,000-mile trek through territory populated by tribes suspicious of their intentions, Lewis and Clark’s party faced many dangers—including grizzly bear attacks, freezing winters, treacherous river crossings, and periods of near-starvation. Watch a 30-minute elaboration of their heroic efforts here.

Clark’s maps provided the first detailed record of the American West

Covering over 8,000 miles, William Clark’s maps charted rivers, mountains, and tribal territories with remarkable accuracy. Equipped with sextants, compasses, telescopes, and more, Clark became an expert at surveying—requiring extensive celestial and topographical observations each day.

Lewis and Clark’s journey became a blueprint for future exploration

Combining science, diplomacy, and logistics, the Corps of Discovery created a model for later expeditions—from charting the Arctic to NASA’s space missions.

The expedition produced the first detailed climate records of the West

Lewis and Clark logged daily temperature, weather, and seasonal patterns throughout their journey, creating the earliest systematic meteorological record for the western territories of the United States. Their observations helped overturn longstanding views that weather west of the Appalachians was similar to the East Coast.

A free archive of firsthand historical documents from explorers of America

Maintained by the Wisconsin Historical Society, the American Journeys collection contains more than 18,000 pages of primary source documents—journals, letters, maps, and accounts written between roughly 1000 CE and the early 1800s. These include eyewitness records of the Norse arrival in North America, Spanish conquistador expeditions, and the Lewis and Clark journey. Browse this list of highlights where pages from the original texts are specified (clicking a link opens a PDF).

Jefferson’s Lewis and Clark expedition joined the centuries-long hunt for Northwest Passage

For centuries, leaders pursued a direct seafaring trade route from Europe to Asia. Jefferson joined this quest by sending Lewis and Clark west, though they confirmed no such practical interior route existed across the continent.

Jefferson sent Lewis and Clark to map, trade, and secure the West

Beyond seeking a water route to the Pacific, Jefferson tasked the Corps of Discovery with mapping the new Louisiana Territory, cataloging its resources, and establishing trade with Native nations.

Listen to a podcast about the eerie side of national parks

Although the National Park System is a relatively recent invention, the lands it includes have been around since the dawn of time and, as a result, have accumulated some interesting folklore. This podcast walks you through some of the best legends about the parks.

Lewis and Clark encountered more than 70 Native tribes during their journey

The Corps of Discovery’s diplomacy ranged from peaceful trade and vital aid from tribes like the Shoshone and Nez Perce to tense standoffs, most notably with the Teton Sioux, who nearly brought the expedition to a halt.

The Lewis and Clark expedition lasted over two years

The Corps of Discovery departed St. Louis in May 1804 and returned in September 1806, covering more than 8,000 miles by boat, horseback, and on foot. See a timeline of the journey’s key events.

Explore landforms that exist across America's national parks

Landforms are not just scenic vistas; they are geological storytellers that shape ecosystems, climates, and our understanding of Earth's history. In this comprehensive look at landforms from the National Park Service, you will learn not only about different types of American landforms, but you will understand how these geological features are shaped by various forces, how they reveal an area's geological history, and how they influence climate and ecology.

William Clark negotiated one-tenth of all ratified treaties between Native Americans and the US.

A riveting retelling of the 1846 Donner Party, the doomed western pioneers

Eighty-one people went with the Donner Party into the Sierra Nevada mountains in the winter of 1846 via what they thought would be a shortcut to the West. Only 41 came out. The infamous episode of Western travel is captured in narrative detail in this four-part podcast series. This first episode reveals the motivations that pushed the party on this specific route.

Yellowstone was the world's first national park

Before it was designated as such, it was home to 27 Indigenous tribes, including the Blackfeet, Crow, and Nez Perce. European trappers and traders traveling west were entranced by the area’s stunning beauty and natural resources, fueling a push for the government to preserve the land for future generations.

The Lewis and Clark Expedition unexpectedly ran into Sacagawea's long-lost family in the Rocky Mountains.

Hear the story of the early American environmentalists who shaped the public lands we enjoy today.

Hear from a NYC public health official who led the first US investigation into West Nile about the challenges investigators faced and their working theories about that outbreak.

Watch city kids encounter the national parks

Part of Ken Burns’ "The National Parks: America’s Best Idea" film series, this video follows students from Las Vegas and Miami as they visit national parks. In Death Valley, the students get hands-on lessons in geology, while in Biscayne, they canoe through secluded groves and past coral reefs.

Park rangers discuss what it's like where two deserts meet

In this 29-minute podcast, two park rangers at Joshua Tree National Park sit down with Dr. Cameron Barrows from the University of California-Riverside to understand what exactly it means for two deserts to meet. Slightly bigger than the state of...

The creation of the parks often involved displacing Native tribes

Early parks like Yellowstone, Glacier, and Yosemite involved the removal of tribal communities like the Shoshone, Crow, and Nez Percé, undermining the popular narrative that parks preserved an uninhabited wilderness.

The real stories behind America's national parks

The history and impact of national parks is complex. The authors of "Olmsted and Yosemite: Civil War, Abolition, and The National Park Idea" curated this list of nonfiction books examining American national parks from a variety of perspectives.

The Lewis and Clark Expedition brought along an estimated 120 gallons of whiskey and still ran out of alcohol halfway through the journey.

The expedition included Clark’s enslaved servant, York

York, Clark’s enslaved servant, played a full role in the expedition—hunting, scouting, and aiding diplomacy with Native nations who were fascinated by his appearance. Despite his contributions, York remained enslaved for some time after the journey, though its uncertain if he remained so for the rest of his life. Explore every member of the Corps of Discovery here.

Learn about the plant and animal species in every US county that are federally protected under the US Endangered Species Act with this interactive map.

Colombia’s biodiversity performs the national anthem

Scientists and composers in Colombia trekked more than 600 miles collecting audio from the country's vast assortment of creatures. Using parabolic microphones, recorders, cameras and field gear, they recorded the sounds of birds, whales, landscapes, and more to eventually recreate their Colombia’s national anthem using its biodiversity as an orchestra. Follow the fascinating journey and listen to the “natural anthem” in the article.

Explore the technical side of the Erie Canal

Listen to this podcast from Northwestern University exploring the canal’s groundbreaking infrastructure—from locks and aqueducts to its role as America’s first large-scale engineered waterway.

The first women to run the Colorado River discovered four plant species

Over 45 days and 660 miles, Elzada Clover and Lois Jotter identified more than 50 species in what was the first botanical survey of the region. Expected to help navigate boats and cook for the crew during the day, their work was confined to before dawn and after dusk.

Visit global national parks from your living room

Get your fill of incredible scenery with this collection of 17 different virtual tours of national parks. Catch the Northern Lights over Abisko National Park in Sweden, or explore the famous red sand dunes of Namib-Naukluft National Park in Namibia.

How one biologist drew a national park's definitive map

Long before GPS, biologist John Cely mapped the swampy terrain of South Carolina's Congaree National Park by hand, and mostly from memory. The map was so accurate, it became the preferred resource for the park's rangers. This Atlas Obscura article explores how Cely acquainted himself with the park's particulars and how the map grew from an unofficial peculiarity into the park's definitive guide.

The science of dogs, from wolf origins to color-blindness

This under 10-minute podcast episode dives into the rich, fascinating science behind dogs: From their world-class sense of smell to their domestication from wolves.

American archaeology has a complicated legacy

Many national parks were discovered through American archaeological expeditions and, consequently, included the looting of Native American cultural sites and artifacts.

The Leopold Report was an early blueprint for ecosystem management

The 1963 report, officially known as Wildlife Management in the National Parks, recommended wildlife management and ecological preservation. In 2012, a follow-up report built upon the original paper to guide future park service policies based on scientific findings.

How a deadly antarctic expedition turned poisonous

A deadly 1912 scientific expedition to the Antarctic took a turn for the worse when the expedition team's leader turned to man's best friend to fuel their journey. This 21-minute podcast episode provides a glimpse into the real-life dangers of...

Learn about the long and contested history of free speech in America

This podcast examines how American free speech protections evolved—from the Founders' debates to landmark Supreme Court rulings—and why the country arrived at one of the most expansive speech regimes in the world.

Explore over 46,000 pages of Charles Darwin's manuscripts

The American Museum of Natural History hosts almost 35,000 digitized folios related to evolution within the fields of botany and zoology from Darwin's Beagle voyage. High-resolution color images, geological findings, and annotated books from Darwin's personal library are also viewable.

National parks, explained

Roughly 83 million acres of the United States are set aside as federal National Parks land, an area large as Germany. From the original Yellowstone Park to small monuments and memorials, learn the essentials on this portion of America dedicated to public enjoyment and recreation with our quick explainer video.

Here's how humans migrated across the world

From our deepest origins in Africa all the way to the Americas, by looking at the fossils and archaeological materials we have been able to trace the path our ancestors took during thee short window of time when we took over the world.

Scientists can suck animal DNA from the air

A look at how researchers filtered the air around two zoos and identified genetic material from dozens of species, a technique that could help track and conserve wildlife.

Explore a collection of galleries of pollinators found in national parks

Many of the photographs were taken during pollinator inventories in national parks across the US. Although these inventories often focus on bees and butterflies, the collection also features beetles, moths, spiders, and birds that transfer pollen as they move from bloom to bloom.

Ansel Adams' 20th-century photographs of national parks captured the majesty of a growing National Park System.

'Grand Canyon of the Yellowstone,' a work by American painter Thomas Moran, inspired Congress to establish Yellowstone National Park.

Desert wildlife: diverse, threatened, and misunderstood

This article sheds light on the surprisingly diverse wildlife that thrive in deserts, while also highlighting the gaps in human understanding of these ecosystems. Deserts are home to one-quarter of terrestrial vertebrate species—three percent of...

How a scientist discovered West Nile is spread by birds

Listen to Tracey McNamara, former chief pathologist at the Bronx Zoo, detailing her surprising late 1990s discovery that established West Nile virus is spread by birds. Financing animal disease surveillance studies, she says, saves human lives and surveillance gaps may fuel missed opportunities to identify dangerous diseases before they jump between species.

The Corps traded gifts with many native tribes as a sign of goodwill

They offered peace medals, beads, cloth, and mirrors, while receiving food, horses, furs, and guidance that helped them navigate and survive the western wilderness. This image collection showcases items the expedition collected.

Watch David Attenborough catching a python on 'Zoo Quest'

The first series, hosted by the famed natural historian, was meant to be presented by Jack Lester, a curator at the London Zoo, who would be documented while they captured wildlife to bring to the institution. Because Lester became ill, Attenborough became the presenter and often participated in the capture of animals, such as snakes.

Hear the untold colonial backstories of the British Museum’s most famous artifacts

This podcast from VICE’s Unfiltered History Tour visits the British Museum’s prized objects through accounts from experts and communities from which they were taken.