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Of moles and liquid nitrogen
Of 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
Lighting it up for Vivid Sydney
Lighting it up for Vivid Sydney
It’s winter in Australia, and the residents of Sydney fend off the winter gloom with a citywide festival. The wild light shows of Vivid Sydney encourage people to explore the city and see it in a new light. (Sorry. That had to happen.) Our photo shows the interior of "PJ the Port Jackson Shark," a light sculpture at the Taronga Zoo. It allows visitors to walk into the mouth of the ‘shark.’Desktop Version
Salmon migration in full swing
Salmon migration in full swing
If you live in the Pacific Northwest, you may get a chance to view migrating salmon this fall. For the sockeye salmon shown here, the epic journey takes them from the waters of the Pacific Ocean back to the freshwater lakes and streams where they were born. There they’ll spawn, their bodies turning from a silvery blue to crimson and changing shape in the process. This isn’t always an easy journey. Dams and other human interventions have affected salmon runs, and West Coast salmon numbers have been in decline. We’re fans of groups like Long Live the Kings, a Pacific Northwest nonprofit that’s helping rebuild salmon populations and protect their habitat—for the long run.Desktop Version
The long and wiggling path
The long and wiggling path
In 1926, Walter Ruesch, the first superintendent of Zion National Park in Utah, oversaw the construction of this section of the Angels Landing Trail, one of the park"s most ambitious trails. Although he had no previous engineering experience, Ruesch planned the steep 21-switchback path out of Refrigerator Canyon up to Angels Landing. The section of the trail, now affectionately called Walter’s Wiggles, was first built to enable horses" access to Cabin Spring. One of the most difficult and dangerous sections of the Angels Landing Trail, Walter"s Wiggles was resurfaced in 1985 in a project that required 258 helicopter flights to haul in concrete for the job.Desktop Version
Sky island views
Sky island views
Though it"s December, it isn"t cold and snowy everywhere in North America. Here, near Tucson, Arizona, the Sonoran Desert stays warm year-round. In this photo, we"re looking at a "sky island"—an isolated, high-elevation woodland surrounded by radically different lowland environments. In this case, the desert land at the base of the mountain is peppered with saguaros—a stately cactus recognized for its long arms. The snow-capped Santa Catalina Mountains in the distance are part of the Madrean Sky Islands and are home to Mount Lemmon Ski Valley, which is the southernmost ski destination in the US. The ski area covers the slopes of Mount Lemmon, which reaches an elevation of about 9,100 feet at the summit and can receive around 180 inches of snow annually.Desktop Version
Rising up from the black sand like rock gods
Rising 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
Arctic fox in Norway
Arctic 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
Longer days mean warmer sand
Longer days mean warmer sand
Today we’re hitting the beach in Costa Rica’s Cahuita National Park because, well, just take a look at this place. If the sun gets too intense, we might take a stroll into the park’s lowland wet forest where, if we’re lucky, we’ll see sloths, toucans, and howler and capuchin monkeys; or maybe we’ll encounter armadillos, coatis, iguanas, and tamanduas (anteaters). After that, we’ll take a dip in the Caribbean waters offshore to marvel at coral reefs, sea turtles, and hundreds of species of fish.Desktop Version
It s International Jazz Day
It s International Jazz Day
We’re joining the rest of the world in celebrating International Jazz Day with this 1959 image of the legendary trumpeter Louis Armstrong. Jazz music has its roots in Armstrong’s hometown of New Orleans, but it quickly spread throughout the United States before developing an international appeal and influence. April 30 is designated by the United Nations Educational, Scientific and Cultural Organization (UNESCO) as International Jazz Day to highlight the music and its role in cultures around the world.Desktop Version
Three cheers for polar bears!
Three cheers for polar bears!
February 27 is International Polar Bear Day, an observance created to bring attention to the important role these alpha predators play in the Arctic ecosystem. Though polar bears aren"t endangered—their current conservation status is "vulnerable"—these magnificent beasts have become a sort of mascot for the race to slow the melting of Arctic sea ice. The Arctic ice is crucial to the bears" survival, as they hunt the ringed seals that bob up through holes in the ice. As Arctic ice decreases, the polar bears" hunting ground does too.Desktop Version
Paper lanterns on the longest night
Paper lanterns on the longest night
For the winter solstice today, we’re in Santa Fe, where residents celebrate the holidays with lovely paper lanterns known as farolitos, or luminarias. The annual Farolito Walk takes place each Christmas Eve in the city’s Canyon Road arts district, but the farolitos are often on display much earlier, lighting the way among the pueblo-style architecture that this region is known for. Winter solstice marks both the official start of winter, and the longest night of the year—meaning these paper lanterns will be put to good use tonight.Desktop Version
Climb a tree for wild animals and plants
Climb 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
Hey, don t you guys have somewhere to be?
Hey, 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
American bison
American bison
For an American bison, winter is the season to slow down, plump up, and let your hair grow out. Relatable, sure, but these massive mammals get there without the aid of beer, chips, and a couch.Desktop Version
Unearthing a queen s lost tale
Unearthing a queen s lost tale
Almost 3,500 years ago under Queen Hatshepsut"s reign, Egypt enjoyed decades of peace and flourishing culture, and this elegant temple is just one piece of her larger-than-life legacy. But the pharaoh who succeeded Hatshepsut forbade all mention of her rule, taking credit for her monuments and leaving her name all but unknown for millennia.Desktop Version
Autumn in Piedmont
Autumn in Piedmont
This beautiful fall scene is in the Langhe area of Piedmont, one of the great wine regions in Italy. More specifically, we"re looking at the hills of Barolo, a town famous for its locally produced wine of the same name, made from Nebbiolo grapes. In addition to wine, Piedmont is known for its truffles, which are harvested this time of year. Piedmont chocolate is also highly prized. Bicerin, a popular coffee-chocolate drink from the city of Turin (which hosted the 2006 Winter Olympics), has been around since the 18th century. The piemontesi, as locals are called, know how to eat and drink. Salute!Desktop Version
Illuminations on the Gulf of Poets
Illuminations on the Gulf of Poets
Each year on Aug 17, the northern Italian fishing village of Porto Venere is illuminated with more than 2,000 torches for the festival of the White Madonna, a tribute to the town’s patron saint. The lights extend onto this rocky spur, which juts into the Gulf of La Spezia, also known as the Gulf of Poets. With views like this, we can easily see how it inspired poets and artists throughout history–including Lord Byron, who is said to have swum across this body of water to visit fellow poet Percy Bysshe Shelley.Desktop Version
National Love a Tree Day
National Love a Tree Day
The owner of this land in Wales could have chopped down the oak tree to make room for more crops, but we like to think he was too fond of the tree. And what’s not to like? Not only do trees provide beautiful scenery, they also offer animal habitat, cooling shade, and jobs. What’s more, they combat climate changes by absorbing CO2 from the atmosphere. Every day should be National Love a Tree Day, in our book.Desktop Version
A ‘Superior’ paddle
A ‘Superior’ paddle
The Apostle Islands National Lakeshore off the northern tip of Wisconsin is a paradise for kayakers and campers, and those who like to combine the two. The park includes 21 islands which, if you’re willing to transport your own gear, offer uncrowded camp sites because, well, they’re islands. Once you’re in a kayak, you can explore some of the red sandstone sea caves, which are best appreciated from the water.Desktop Version
Wildebeest on the move
Wildebeest on the move
Each year, as many as 1.5 million blue wildebeest move through the Serengeti region of eastern Africa, traveling in a roughly 800-mile loop through Tanzania and Kenya as they chase lush, green grass and fresh water. When resources are depleted in one area, the animals move to another. Late summer often finds them in Kenya"s Maasai Mara National Reserve, shown on today"s homepage. The speedy wildebeest (the species can run up to 50 mph!) is not alone in its journey; hundreds of thousands of zebras, gazelles, and elands accompany the herd. The great number of animals makes this phenomenon one of the largest land migrations on Earth, often called the World Cup of Wildlife.Desktop Version
Giving Tuesday
Giving Tuesday
These common terns sharing a fish have the right idea for today, which is Giving Tuesday. Held annually on the Tuesday after the US Thanksgiving, the global movement serves to encourage acts of generosity during the holidays, when consumerism seems to be the focus for so many. Giving Tuesday was founded in 2012 by New York"s 92nd Street Y in partnership with the United Nations Foundation. Originally observed only in the US, it"s grown into a worldwide celebration of generosity promoted by a newly independent organization. There are several ways you can participate: Donate to the cause of your choice, volunteer your time, or just do something nice—even sharing a fish counts.Desktop Version
Dyavolski Most
Dyavolski Most
You"ve heard of a bridge over troubled waters, but what if the bridge is troubled too? Legend tells of a Bulgarian stonemason, Dimitar, who was tasked with solving a bridge problem here in the early 1500s. Dimitar was hired to construct a crossing that wouldn"t collapse into the rushing Arda River, as had all previous spans in this strange spot.Desktop Version
Wedded Rocks, Japan
Wedded Rocks, Japan
Just off the shore of Futami, in the southern-central region of Japan"s main island, Honshu, two rocks represent a sacred union between a divine couple. Known collectively as Meoto Iwa (Wedded Rocks), these sea stacks represent Izanagi and Izanami, the married brother-and-sister deities who created the islands of Japan and its gods in Japanese mythology. The large rock on the left is said to be the husband, Izanagi, and at its peak is a small torii, a symbolic gateway marking the entrance to a Shinto shrine. The smaller rock represents his wife, Izanami.Desktop Version
Fall for Chile
Fall for Chile
It"s nearly autumn in Chile, where signs of the season vary widely as one travels from the Atacama Desert in the north more than 2,600 miles south to the tip of Tierra del Fuego. Around halfway between these two extremes you can find Conguillío National Park and the volcano Llaima at Chile"s center. In March, at the start of the Southern Hemisphere"s autumn, the leaves of the deciduous forest begin to turn color and fall, and the native Chilean pine trees (Araucaria araucana) stand out even more strikingly.Desktop Version
A ‘circus of chaos’ for Stravinsky
A ‘circus of chaos’ for Stravinsky
The whimsical sculptures of Stravinsky Fountain in Paris are a bold, modern contrast to the Church of Saint-Merri, seen in the background of our photo today. The fountain—designed to inspire feelings of joy and playfulness—is a tribute to the groundbreaking symphonic composer and conductor Igor Stravinsky. Though he was born near St. Petersburg, Russia, Stravinsky wrote and debuted many of his career-making works while living in France in the early 20th century. It was this day in 1913 that Stravinsky’s ballet ‘The Rite of Spring’ debuted at the Théâtre des Champs-Élysées.Desktop Version