Researchers wanted to study how Anna's hummingbirds adapted to higher elevation. (Pictured: male Anna's hummingbird)

Scientists Moved Hummingbirds to High Elevations to See How Climate Change Might Affect Them

Artificial migrations to colder environments altered the small bird's metabolism and ability to fly

The leather sandal's owner likely wore it with wool wrappings or socks made out of fabric or animal skins.

Cool Finds

Melting Ice in Norway Reveals 1,700-Year-Old Sandal

An ancient traveler likely discarded the worn-out leather shoe as rubbish around 300 C.E.

Analysis of historical documents showed no evidence of the site being called Machu Picchu until 1911.

Have We Been Calling Machu Picchu by the Wrong Name?

Historical records suggest the Inca called the 15th-century citadel Huayna Picchu, before an American explorer who "discovered" the site in 1911 renamed it

Utah state officials set out two barrel traps to capture an elusive wolverine that was spotted from an aircraft. 

Utah Captures and Collars First Wolverine in State History

The state has only confirmed eight wolverine sightings in 40 years. Data from the GPS collar will provide invaluable insights about the elusive species

In the mountains of southwestern Nevada, the dark fossilized remnants of extinct archaeocyath reefs dot the tops of the hills. Millions of years ago, these peaks were at the bottom of the sea.

Fossils From One of the World's First Reefs Can Be Found on Mountains in Nevada

Archaeocyaths were the original reef builders, and one of the best places to see them is in the desert

The ice stupa project in Chile was inspired by the original one founded in India, where communities in the Ladakh Valley are using the mini glaciers to get them through the dry months.

As Natural Glaciers Recede, Some Communities Are Building Their Own

Each ice stupa holds thousands of gallons of water, providing communities with a freshwater source during dry seasons

A Chinese mountain cat photographed in a field of grass.

New Research

Elusive Chinese Mountain Cats Aren't Domestic Cats' Ancestors

Past genetic studies on feline domestication hadn't included this wildcat native to the Tibetan Plateau

The snow’s red hue may also create a ‘snowball’ effect that harms ecosystems because red-tinged snow does not reflect as effectively as white snow and will melt faster.

What 'Glacier Blood' on the French Alps Tells Scientists About Climate Change at High Elevations

The red hue is produced by snow algae blooms. The color most likely shields the algae from damaging ultraviolet rays

Archaeologists unearthed this well-secured wooden box near the melting Lendbreen glacier in Norway.

Cool Finds

Melting Glacier in Norway Reveals Remnants of Centuries-Old Beeswax Candle

Carefully preserved in a pine box, the item would have provided light for farmers who traversed the icy alpine pass

Pourang Mokhtari watches over the family's goats and sheep high in the Zagros Mountains.

Passage Through the Zagros

True to an ancient way of life, a family in Iran makes a treacherous seasonal migration across the mountains

Warming temperatures allowed archaeologists to begin examining the barracks, which had previously been sealed off by a glacier, in 2017.

Cool Finds

Melting Glacier in the Italian Alps Reveals Trove of World War I Artifacts

Excavations at the summit of Mount Scorluzzo offer rare glimpse into lives of soldiers fighting in the White War

Nepal opened up Mount Everest and its other seven peaks this year in hopes of regaining tourists after their mountaineering economy took a devastating hit.

As Cases Surge in Nepal, Covid-19 Reaches Mount Everest

Base camp officials have seen rising numbers of climbers with symptoms and positive coronavirus tests

Rescuers found the Dyatlov group's abandoned tent on February 26, 1959.

New Research

Have Scientists Finally Unraveled the 60-Year Mystery Surrounding Nine Russian Hikers' Deaths?

New research identifies an unusual avalanche as the culprit behind the 1959 Dyatlov Pass Incident

The world's highest-altitude peak is called Sagarmatha in Nepal and Chomolungma in Tibet.

Is Mount Everest Really Two Feet Taller?

The new height measurement comes from an updated survey and decades of slow tectonic movement, not a sudden growth spurt

The highest concentration of microplastics—119 particles per quart of water—were found around Everest Base Camp, where climbers spend time resting, regrouping and acclimatizing to the high elevation.

Even Mount Everest, the World's Tallest Peak, Can't Escape Microplastics

At 27,690 feet in elevation, the mountain is the highest point above sea level where microplastics have been detected

A white cloud floats over the top of Mount Everest at dusk.

Into Thicker Air and Onto Thinner Ice: How Climate Change Is Affecting Mount Everest

Researchers have documented that the high-altitude air is gaining more oxygen and large glaciers are melting at rapid rates

The first gray wolves reintroduced to the United States were brought in from Canada in the 1990s.

Colorado Votes to Reintroduce Wolves to the Southern Rocky Mountains

In a historic decision, Colorado voters led the way to bring back the apex predator

Colorado's two largest fires in state history seen from space via Landsat 8. The Cameron Peak fire is on the upper right and the East Troublesome fire is on the lower left; the fires have burned more than 190,000 and 200,000 acres, respectively.

Colorado's Record-Breaking Blazes Illustrate the West's Lengthening Fire Season

Fire season is usually over by this time in October, but, in a trend experts expect climate change to exacerbate, that's not the case this year

Protected land near Crowsnest Pass, Alberta, above, was one of the sites studied in the new analysis of tree lines in the Canadian Rockies.

Because of Climate Change, Canada’s Rocky Mountain Forests Are on the Move

Using century-old surveying photos, scientists have mapped 100 years of change in the Canadian Rockies to document the climate-altered landscape

At 33 pounds, Andean condors are the heaviest soaring birds on Earth, but a new study finds they can stay airborne for up to five hours at a time without flapping at all.

New Research

The Andean Condor Can Soar 100 Miles Without Flapping

The impressively efficient flight was recorded during a new study of the giant scavenger’s aerial prowess

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