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Feb 5, 2022Monarch butterflies in Angangueo, Mexico

Every year, one of the most spectacular natural phenomena in Mexico takes place in the forested mountains west of Mexico City. During the fall, colonies of monarch butterflies migrate here from colder northern climates to find warmth and begin their breeding season. These huge flying colonies can contain as many as 20 million monarchs, which make use of air currents to travel as far as 100 nautical miles per day. The monarchs remain in Mexico from around November to March.Desktop Version

Jan 12, 2021Sailing on thick ice

New York"s Hudson River, winter of 2014: Temperatures were so cold for so long that sailors were able to take their antique wooden ice yachts out for a sail on this 20-mile stretch of thick ice. It was a rare sight for the area. Global warming meant that the Hudson River hadn"t frozen thick enough for safe iceboating in years.Desktop Version

Aug 13, 2020Life in the slow lane

The first humans to settle in this area of what is now southern Italy took up residence in natural caves along the walls of the ravine formed by the Gravina River. Beginning around 9,000 years ago and continuing into the 20th century, the caves were further carved and expanded by these human occupants into an elaborate settlement. It"s now called the Sassi di Matera, a pair of districts in the city of Matera, Italy.Desktop Version

Sep 25, 2018Walking among the giants

Sequoia National Park was founded on this day in 1890, and while the park’s 128 years is nothing to sneeze at, some trees in the giant sequoia grove had called this home for thousands of years before they were given the protection of a national park. The Giant Forest in Sequoia National Park is where General Sherman, the largest tree in the world, stands. It is estimated to be 2,300 to 2,700 years old—a silent witness to both natural and human history. By the time Spanish explorer Vasco Núñez de Balboa ‘found’ the Pacific Ocean in 1513, General Sherman had been growing for more than 1,500 years.Desktop Version

Jan 24, 2021These patterns tell a story

Is it possible for an article of clothing to express the essence of an entire people? Well, not usually, but for the Indigenous Guna people of Panama, the colorful handwoven textiles seen here may be an exception. Molas, which means "clothing" in the Guna language, are traditionally displayed on both the front and back of women"s blouses. Even today, many Guna women prefer to wear them instead of modern attire. The textiles often feature abstract geometric patterns, as well as images from nature such as turtles, flowers, birds, and fish. Guna women of yesteryear were known to paint their bodies with those same geometric patterns and designs, and by the late 1800s they had begun weaving them onto cloth instead of painting themselves. Today, the production of molas is still generally done by women, who use an intricate process called reverse appliqué, where as many as seven layers of fabric are sewn together to form a panel, which is then hand-cut to create the vibrant designs.Desktop Version

Mar 25, 2020It s Tolkien Reading Day

For Tolkien Reading Day, we"re featuring Oxford University"s Radcliffe Camera, the reading room for the Bodleian Library, which is home to the world"s largest archive of J.R.R. Tolkien"s original manuscripts and drawings. While Tolkien never worked in the Radcliffe Camera (Latin for "room"), he both studied at Oxford (graduating in 1915 with first-class honors in English language) and taught here as a professor.Desktop Version

Mar 29, 2021Rising up from the black sand like rock gods

Any visitor to Iceland knows that driving the Ring Road rewards the traveler with incredible changing landscapes. Today, we"re taking a quick detour to visit this chiseled stretch of Iceland"s southern coast, where black sand beaches meet spiky basalt sea stacks. This is Reynisfjara Beach, widely considered the most beautiful example of Iceland"s black sand beaches. The sea stacks fronting the beach are known as Reynisdrangar and were formed when a volcano erupted, spewing flowing lava that cooled into these formations. Ask the locals how they formed, however, and you may get a different story, one involving trolls and a battle with a three-masted ship.Desktop Version

Jun 1, 2020The largest living organism on Earth

Today marks the second-ever World Reef Day, an observance created to help focus global attention on the deteriorating health of our planet"s vital reef systems, and also to help marshal efforts to help them recover. Why should we care about the health of ecosystems such as the Great Barrier Reef, seen in this photo? Because reefs are an easy indicator of how healthy our oceans are. And right now, reefs aren"t doing too well. What can we do? Learn about reefs—not just the dangers that put healthy reefs at risk, but why reefs are such a critical part of Earth"s greater ecosystems.Desktop Version

Sep 23, 2020A tree of many memories

As autumn takes hold in China, a blanket of fan-shaped golden leaves—like this one at Xuanwu Lake Park in Nanjing—becomes a familiar sight. And it"s been that way for longer than anyone can remember, thanks to a native tree with a lineage going back eons, the ginkgo.Desktop Version

Feb 13, 2020Midwinter freeze

Abiqua Falls in Oregon is a beautiful example of a basalt column amphitheater. Over 90 percent of all volcanic rock is basalt, but only a small fraction of it forms into the hexagonal columns that you see here. When molten lava hits the atmosphere, rapid cooling causes it to contract into these characteristic columns. It"s just part of what makes Abiqua Falls so spectacular.Desktop Version

Dec 10, 2021Arctic fox in Norway

We"re visiting Norway"s Dovrefjell–Sunndalsfjella National Park, where this small but mighty Arctic fox is undergoing changes to prepare for the cold, Nordic winter. While animals have many ways to adapt to winter weather, such as migrating, hibernating, and growing thick fur, the Arctic fox does none of these. Instead, its coat transitions from brown and gray to a snowy white every autumn. The fox"s pelt acts as camouflage, allowing it to blend in among the rocks and tundra for half of the year and, after turning white, hide in the snow and ice the other half.Desktop Version

Jul 24, 2021Can you see the family resemblance?

In honor of Cousins Day, we"re hanging out on a limb with these four Javan tree frogs in Indonesia. Tree frogs are smaller than your average terrestrial frogs because they spend the majority of their lives perched in trees, and their weight must be fully supported by twigs and leaves. At the rounded ends of their froggy fingers and toes are disc-shaped adhesive pads that help them to maneuver about on trees. While most tree frogs (there are 800 species all over the world!) are green, brown, or gray, these Javans are bright and colorful. This is so they can blend into their jungle environs and avoid notice by predators such as snakes, spiders, bats, and owls.Desktop Version

Mar 3, 2021Climb a tree for wild animals and plants

Today is World Wildlife Day, the annual United Nations celebration of the incredible diversity of our planet"s wild animals and plants. The theme of this year"s WWD is "Forests and Livelihoods: Sustaining People and Planet." Through a series of virtual events, and a panel at UN headquarters, UN representatives and partner wildlife groups will examine the links between the state of our planet"s forests and woodlands and efforts to preserve the millions of livelihoods that directly depend on them. A particular emphasis will be placed on the role of Indigenous peoples who still live and work in forested areas, how they"ve successfully managed their forest ecosystems for centuries, and what that can teach us about sustainability.Desktop Version

Dec 28, 2022Maloja, Switzerland

The word "picturesque" is an understatement when taking in today"s image of Maloja, Switzerland. This Alpine village in the canton of Grisons is surely the envy and inspiration of snow globes the world over! Located just a few miles from the Italian border, the impossibly perfect winter scenes found here have inspired painters and artists for centuries. Majola is near Lake Sils, which makes this area a recreational destination in both summer and winter. At the center of our image is the crown jewel of Maloja, the Chiesa Bianca, a church built in the 1880s by a Belgian count. Today, the once solemn space is used to stage exhibitions and concerts.Desktop Version

Oct 23, 2018Of moles and liquid nitrogen

What a coincidence! Three days into National Chemistry Week, we dive further into STEM education to celebrate Mole Day. We’re not toasting the burrowing animal, but the unit of measurement (mole) used primarily in chemistry and molecular science studies. We don’t know how many moles of liquid nitrogen are in this photo, but we do like the dynamic look of the super-cooled element, which in liquid form can resemble boiling water. We hope this photo doesn’t depict liquid nitrogen after somebody in the lab dropped their keys into the vat. At minus 320 degrees Fahrenheit, liquid nitrogen tends to flash-freeze anything immersed in it.Desktop Version

Jun 15, 2019Pasadena Chalk Festival supports local arts education

Since 1993, the Pasadena-based nonprofit Light Bringer Project has supported arts education in the Los Angeles area by helping produce the annual Pasadena Chalk Festival. Hundreds of artists spend the weekend creating unique chalk artworks on the sidewalks of historic downtown Pasadena for this free event. Funds are raised through donations from festival attendees and proceeds from sales of artwork and a silent auction.Desktop Version

Dec 13, 2021Old Town Quito

If Ecuador"s capital city, Quito, isn"t high enough for you at 9,350 feet above sea level, you can elevate your experience even further with a journey up El Panecillo. Translated from Spanish, "El Panecillo" means "The Dinner Roll." Rising 650 feet above the old city center, seen in the foreground, this rotund volcanic hill offers perhaps the best possible panorama of Quito. Though our viewpoint here, looking south through Quito"s vast valley, makes for a nice twilight shot, too.Desktop Version

Oct 2, 2018North Cascades National Park at 50

You’ve heard of Yosemite, Yellowstone, and Glacier National Parks–but here’s a lesser-known destination to add to your national park bucket list. North Cascades National Park celebrates its 50th anniversary today. Located about 100 miles northeast of Seattle, and stretching up to the Canadian border, it"s surrounded by two national recreation areas and other protected lands, including several national forests and wilderness areas, and by Canadian provincial parks in neighboring British Columbia. Despite all of this stunning wilderness, North Cascades National Park isn"t nearly as busy as the big-name parks, and that can be a good thing. Here you’ll find the most extensive system of glaciers in the lower 48 states—more than 300 glaciers. It’s the glaciers that lend a lovely turquoise hue to freshwater lakes, like Ouzel Lake on today’s homepage. The 500,000-acre park also boasts spectacular wildlife, alpine forests, and waterfalls. See you there?Desktop Version

May 15, 2018Celebrating the UN’s International Day of Families

In honor of the UN’s International Day of Families, we present the hyrax–a species with a rather surprising family tree. These furry mammals are often mistaken for rodents, but they’re more closely related to the elephant and manatee. Hyraxes even sport tusk-like incisors like their elephant cousins. To stay warm, they spend much of their time sunbathing, an activity which makes them vulnerable to predators. But even hyrax families look out for one another—and a male hyrax will stand guard to watch for potential threats.Desktop Version

Jul 3, 2019Keep calm and drive on (slowly)

Following its winter closure due to heavy snowfall, the Transfăgărășan in Romania is now open for business. Also known as the DN7C highway, the road cuts through the Făgăraș Mountains, offering stunning views of waterfalls, glacial lakes, and lush valleys—plus steep drop-offs and hairpin turns to amp up the drama. Back in 2009, Jeremy Clarkson, co-host of the British TV show "Top Gear," called this twisty route the "best road in the world," which helped turn it into a major tourist draw. The Transfăgărășan reaches elevations just shy of 6,700 feet and has more tunnels and viaducts in its 55 miles than any other road in this mountainous country. But proceed with caution. The speed limit is a sensible 25 mph. And watch out for herds of sheep that use it as a path to greener pastures, and don"t mind blocking traffic as they amble there.Desktop Version

Mar 11, 2021Welcome to the drainpipe of the Pacific

We are standing here on the craggy Oregon coast looking out to Thor"s Well with the help of a photographer"s telephoto lens. Only the most daring of visitors would get this close to the gaping sinkhole at high tide. One misstep combined with a forceful surge from the raging Pacific Ocean, and into the plunging well we"d go.Desktop Version

Apr 29, 2020Spring comes to the Palouse

The Palouse region of the inland Pacific Northwest is an unusually hilly prairie that straddles the state line between Washington and Idaho. Farming seems an unlikely endeavor here, but the soil and weather patterns make it ideal for growing certain crops, especially wheat and lentils. This time of year, when the wheat and barley crops are young, the hills brighten to fresh shades of green.Desktop Version

Mar 4, 2021The most wonderful day of the year. Period.

Er, comma—at least it seems like that"s what we"re seeing. And just like a comma breaks up a sentence, this structure called a breakwater interrupts the Pacific Ocean, punctuating waves with a crash before they can disturb this Bali beach. Whether its resemblance to a comma (or is that an apostrophe?) was intentional or not, it"s a fine visual for today"s syntactical celebration. That"s correct: It"s Grammar Day! (Note to hardline grammarians: We know punctuation—like a comma—isn"t exactly grammar, but we"re loosening the linguistical reins a bit in the generous spirit of Grammar Day. So put that red pen down, smarty-pants.)Desktop Version

Dec 1, 2021Antarctica Day

At just over 600 miles from the tip of South America, Cuverville Island is closer to civilization than most of Antarctica. As such, this small isle off the northward-jutting Antarctic Peninsula is a hotspot for tourists to catch some cool scenery (while freezing their butts off, of course). Visitors can also chill on the rocky beach with the locals: a glut of gentoo penguins whose rookery here is the largest along the peninsula.Desktop Version

Dec 24, 2020Hey, don t you guys have somewhere to be?

Known in North America as caribou, reindeer are built to live in freezing Arctic regions like northern Norway, where this herd was photographed under the transfixing swirl of the aurora borealis, or northern lights. Reindeer have evolved unique features that help them thrive in these harsh environments. Their noses are adapted to warm the air they breathe before it enters their lungs, which helps maintain a steady body temperature even in the coldest of weather. And most of their bodies, including their hooves, are covered with thick, dense fur to keep them well insulated. In fact, they are more likely to overheat then freeze—so when they"re flying through the starry skies tonight, they"ll be feeling snugger than Santa Claus in his red velvet suit.Desktop Version

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