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Frost-covered dunes on Mars
Frost-covered dunes on Mars
Mars, the fourth planet from the sun, is often referred to as the "Red Planet" due to its rusty hue from the iron oxide-rich soil dust. The planet is dotted with frosty dunes, largely located in the high latitudes of the northern plains. Mars" atmosphere is composed of nearly 96% carbon dioxide, which is why carbon ice forms on the surface. These dunes showcase the dynamic interaction between Mars" thin atmosphere, its surface, and seasonal temperature changes.Desktop Version
The Sonoran Desert, Arizona
The Sonoran Desert, Arizona
Welcome to the Sonoran Desert, where life thrives despite the heat thanks to two seasons of rainfall. This subtropical desert spreads across parts of Mexico, California, and Arizona and is home to animals such as roadrunners, Gila monsters, and the Morafka"s desert tortoise. Its rainy seasons are followed by the blossoming of colorful wildflowers such as the brittlebush, seen in today"s image. These hardy shrubs are adapted to the dry seasons, with their silvery-gray leaves covered in fine hairs that help reduce water loss. Brittlebushes produce bright yellow flowers that bloom in clusters, adding splashes of color to the desert landscape. Another drought-loving desert flora is the saguaro cactus, which can live for over 150 years and grow up to 40 feet tall. The saguaro also provides food and shelter for desert species and is a sacred plant in the culture of the Tohono O"odham people.Desktop Version
Star Wars Day
Star Wars Day
May the Force be with you on May 4, adopted by "Star Wars" fans as the day to celebrate their favorite franchise. Many will recognize Skellig Michael, the island on our homepage, as the location of scenes from the "Star Wars" sequels, "The Force Awakens" and "The Last Jedi." This UNESCO World Heritage Site appears in the movies as the planet Ahch-To, where Jedi master Luke Skywalker seeks refuge. Home to a 6th-century monastery with beehive huts and stone staircases, it also hosts a large seabird population that inspired the penguin-like porgs that roost on Ahch-To. Skellig Michael is about 7 miles off Ireland"s southwestern coast, daily visitors are limited, and boat trips are canceled if it is too stormy. Still, the island attracts "Star Wars" fans and others keen to see this ancient site, not so very far, far away.Desktop Version
International Tiger Day
International Tiger Day
We"re off to a roaring start today: It"s International Tiger Day, which aims to protect these magnificent big cats amid threats such as poaching and habitat loss. At the end of the 19th century, there were thought to be around 100,000 tigers in the wild; these days, there are fewer than 6,000.Desktop Version
World Octopus Day
World Octopus Day
Today, we celebrate a creature with three hearts and the uncanny ability to change color at will: the octopus. Octopuses are cephalopods, marine animals like squids and cuttlefish that have tentacles. Among their many species is the small and shy mototi octopus, pictured here. It was discovered in 1999 around Rapa Island in the South Pacific and is known for the "fake eyes" or ocelli—vibrant blue and yellow rings—between its eyes and arms. Found in the Indo-Pacific region, including Indonesia, Australia, and Okinawa in Japan, mototi octopuses are masters of disguise. They usually have a dull orange-cream-brown color but when alarmed, they can quickly shift to striking maroon with white stripes along their body and arms. Also known as poison ocellate octopuses, these cephalopods are highly venomous. But you don"t need to worry about running into one, because they tend to be shy and solitary, often hiding in crevices, shells, or man-made objects like bottles and cans.Desktop Version
Aspens in the White River National Forest, Colorado
Aspens in the White River National Forest, Colorado
Slender white trunks reaching skyward and leaves fluttering even in the gentlest breeze—aspen trees are a symbol of the American wilderness. Found across the western states, especially in Utah and Colorado, these trees are the most widespread native species in North America. Their fall foliage is breathtaking, with their leaves turning a vibrant yellow that lights up the landscape, as seen in today"s photo, which was taken in the White River National Forest, Colorado.Desktop Version
Carlsbad Caverns National Park in New Mexico
Carlsbad Caverns National Park in New Mexico
With deep rocky canyons and high ancient sea ledges, Carlsbad Caverns National Park in New Mexico boasts some of the most unique rock formations in the world. Hidden beneath its desert scenery are more than 119 caves—formed when sulfuric acid dissolved the surrounding limestone. This national park, founded on this day in 1930, is also home to North America"s largest underground chamber—the Big Room. From colossal stalactite formations hanging like chandeliers to stalagmite structures reaching for the ceiling, every nook and cranny is a masterpiece crafted over millions of years. This UNESCO World Heritage Site also organizes events like bat flight viewings, which allow visitors to watch thousands of bats as they swoop in and out of the cavern. Are you ready to explore the depths?Desktop Version
Brown pelican, San Diego, California
Brown pelican, San Diego, California
Today"s image features the brown pelican, a bird that doesn"t just fly but soars, spots, and dives with unmatched precision. Although it"s the smallest of the eight pelican species worldwide, it"s still a large bird, measuring about 4 feet in length and having a wingspan of 6.5 feet. It"s a marine-dwelling species and can be spotted along the Atlantic coast of the Americas, from New Jersey to the mouth of the Amazon River. On the Pacific coast, it can be spotted from British Columbia all the way to Peru, including a stop at the Galápagos Islands.Desktop Version
Native American Heritage Month
Native American Heritage Month
Today marks the start of Native American Heritage Month. Throughout November, we honor the history, traditions, stories, and languages of Native Peoples. The Indigenous Peoples of North America have played a significant role in shaping our country, including the food we eat and the medicines that heal us. In addition to being a celebration, this month is also a time to reflect on the issues that Native Peoples face, including civil and voting rights, land access, and education.Desktop Version
Cherry blossoms in Shanghai, China
Cherry blossoms in Shanghai, China
In spring, nature puts on a vibrant display, marking the start of the season with the bloom of cherry blossoms. Around the globe, from Japan to the United States, this spectacle captivates millions of hearts. In China, cherry blossoms, known as "Yinghua," bloom from late March to late April, adorning landscapes with delicate hues of pink and white. Revered for centuries by the Chinese, these fragile petals hold profound significance in their traditions, symbolizing renewal, hope, and the transient nature of life. Among popular places to see them are Wuhan"s East Lake Cherry Blossom Park, Lu Xun Park in Shanghai, and Beijing"s Yuyuantan Park. Cherry blossoms look similar to plum blossoms, but an easy way to distinguish between the two is to look at their petals. Cherry blossom petals have split ends, but plum blossoms don"t.Desktop Version
World Meteorological Day
World Meteorological Day
"When clouds appear like rocks and towers, the Earth"s refreshed with frequent showers." There"s a whisper of truth to this old proverb for the storm clouds, also known as cumulonimbus or anvil clouds, which are pictured here. Today, on World Meteorological Day, we honor the marvel that is our atmosphere. This observance, first held in 1961, commemorates the establishment of the World Meteorological Organization and recognizes the vital role meteorology plays in our lives. Weather forecasts may not always appear reliable, but thanks to advances in technology like satellites and supercomputers, they have come a long way. Global weather models provide forecasts for up to 16 days and, the average lead time for tornado warnings is now around 15 minutes. Cheers for the progress made and much more to come!Desktop Version
Masai giraffes in Amboseli National Park, Kenya
Masai giraffes in Amboseli National Park, Kenya
Masai giraffes roam the vast landscapes of Amboseli National Park in Kenya, as seen in today"s image. At 18 feet or more, giraffes are the world"s tallest land mammals. Along with prehensile tongues that are more than a foot and a half long, they use their impressive height to eat foliage found almost 20 feet from the ground. They"re also faster than you might think, being able to sprint over short distances up to 37 mph. Giraffes are common in East Africa and can be seen grazing in grasslands, woodlands, and reserves.Desktop Version
Gateway Arch in St. Louis, Missouri
Gateway Arch in St. Louis, Missouri
Today we are celebrating the anniversary of Gateway National Park, which was established on February 22, 2018, in St. Louis, Missouri. The park, which lies along a picturesque stretch of the Mississippi River, commemorates Thomas Jefferson’s idea of a continental nation. At its heart stands the Gateway Arch, a breathtaking 630-foot-tall structure that has become the ultimate symbol of St. Louis. Constructed of stainless steel, it holds the distinction of being the world"s tallest arch and Missouri"s tallest accessible structure. Finnish American architect Eero Saarinen dreamed up the design back in 1947, and by October 28, 1965, his vision had been brought to life. The arch"s futuristic design has long been viewed as a symbol of the automobile era, representing the modern, urban landscape, and the promise of a technologically advanced future.Desktop Version
European beech forest, Belgium
European beech forest, Belgium
Beech trees are pretty amazing. There are several species worldwide, but the European beech steals the spotlight in much of Europe. With its smooth gray bark, short trunk, and sweeping branches, this tree is a standout in Belgium"s forests, as shown in today"s image. It grows in temperate regions and prefers well-drained, fertile soils, taking up to 30 years to mature. Not only do these 160-foot-tall trees dominate the landscape, but their wood is also used to make some of the sturdiest furniture, flooring, and even kitchen tools.Desktop Version
Duomo Santa Maria del Fiore, Florence
Duomo Santa Maria del Fiore, Florence
Welcome to Florence, the cradle of the Renaissance. Let the Cathedral of Santa Maria del Fiore transport you through time. More than just a church, this Gothic structure, with its red-tiled dome, is steeped in centuries of history. Built over an older cathedral, construction began in 1296 under the supervision of architect Arnolfo di Cambio. Italian architect Filippo Brunelleschi engineered its dome, the largest brick dome ever constructed. Its completion in 1436 was the final stage of the cathedral"s construction. It"s not just the outside that dazzles; inside there are artistic treasures to discover, from Giorgio Vasari"s fresco "The Last Judgment" to Paolo Uccello"s intricate clock face. The cathedral complex is also home to the Baptistery, a small basilica, and Giotto"s Campanile, a free-standing bell tower.Desktop Version
National Cherry Blossom Festival, Washington, DC
National Cherry Blossom Festival, Washington, DC
Every spring, Washington, DC, transforms into a sea of pink and white as the cherry trees bloom, marking the return of the National Cherry Blossom Festival. This beloved event commemorates the 1912 gift of 3,000 cherry trees from Tokyo"s Mayor Yukio Ozaki to the US, symbolizing the friendship between the two nations.Desktop Version
World Theater Day
World Theater Day
Lights on, curtains rise—it"s World Theater Day. Since 1961, this annual event by the International Theater Institute (ITI) has united audiences and artists in a shared appreciation of storytelling, creativity, and culture. Every year, a renowned theater figure is invited by ITI to deliver a message that resonates across the industry. Their words are translated into more than 50 languages and shared with people all over the world. These messages highlight theater"s role in society—be it as a mirror to reality, an agent of change, or a refuge for the imagination. From Shakespeare"s soliloquies to experimental avant-garde productions, theater has continuously evolved while holding onto its core: human connection.Desktop Version
Happy International Beaver Day!
Happy International Beaver Day!
Today, we celebrate International Beaver Day! Established in 2009 by Beavers Wetlands & Wildlife, this day highlights the vital role beavers play in our ecosystems. Beavers are remarkable creatures known for their dam-building skills, which create wetlands, benefiting numerous species. As North America"s largest rodents, they can grow up to 3 feet long, not including their distinctive flat tails. Their continuously growing teeth, with thick enamel giving them an orange hue, are essential tools for gnawing on trees—a behavior that maintains both their dental health and their environment. No wonder their strong choppers make them one of nature"s best engineers. Who knew a furry little architect could have such a big impact on nature?Desktop Version
Grandparents Day
Grandparents Day
Have you called your nana, abuela, pop-pop or lolo lately? No matter what you call them, there"s no better time to pick up the phone than Grandparents" Day, held on the Sunday after Labor Day. Grandparents play a special role in our lives, helping to raise new generations, passing down family history and sharing the wisdom of their experience. Wisdom is not always indicated by a thick Wilford-Brimley-esque mustache, but whiskers do lend a certain esteemed quality. Perhaps that"s why these Atlantic walruses look like they"re about to tell you why they voted for Hubert Humphrey.Desktop Version
Red deer stag in Glen Affric, Scottish Highlands
Red deer stag in Glen Affric, Scottish Highlands
Striking appearance, strong presence, and impressive antlers—meet the red deer, photographed in the ancient forests of Glen Affric, one of Scotland"s most beautiful valleys. Found across Europe, Asia, and parts of North Africa, this species is Britain"s largest land mammal and an integral part of the Caledonian pinewoods, Scotland"s coniferous forests. From featuring in cave art found throughout Europe to medieval hunting traditions, red deer have always held a special place in the human imagination. In many parts of the world, their image is synonymous with the wild, free spirit of nature. Glen Affric, with its lochs, moorlands, and mountains, provides the perfect habitat for these magnificent creatures. This national nature reserve is also popular with hikers, climbers, and nature enthusiasts.Desktop Version
Przewalskis horses, Hustai National Park, Mongolia
Przewalskis horses, Hustai National Park, Mongolia
Hustai National Park in Mongolia is home to a very special and rare breed, the Przewalski"s horse. Regarded by some as the only truly pure wild horse today, it is easily recognized by its pale yellowish-brown coat, a short, stiff mane, and short legs. The Przewalski"s horse, also called the "takhi" in Mongolia, was once extinct in the wild but has been successfully reintroduced through conservation efforts in the 1990s. An interesting fact about these horses is that they have 66 chromosomes, compared with 64 in domestic horses. Remarkably, Przewalski"s horses can mate with domestic horses to produce hybrids. These hybrids have 65 chromosomes and can breed and have their own offspring.Desktop Version
National Blueberry Day
National Blueberry Day
Celebrate National Blueberry Day by indulging in the sweet, tangy flavors of this beloved fruit. Wild blueberries are native to North America and have been around for over 13,000 years. However, they weren"t commercially farmed until the early 20th century, when the first domesticated variety was bred in New Jersey by Elizabeth Coleman White, an agricultural specialist, and botanist Frederick Coville.Desktop Version
National Library Week
National Library Week
Libraries are magical places. They are home to books full of stories and knowledge, provide easy access to resources that might not be affordable for all, and offer spaces for book clubs, author talks, and other social gatherings. Without a doubt, our society benefits from libraries in several ways. To motivate people to read and take advantage of these institutions, the National Book Committee initiated an event series. The first National Library Week was celebrated in 1958 with the action slogan, "Wake Up and Read!" This year, the annual National Library Week starts on April 6, which coincides with National Library Day. Some libraries will amaze us not only with their collection of books but also with their architecture. The George Peabody Library at Johns Hopkins University in Baltimore has earned the prestigious nickname, "the cathedral of books." Take today"s image as inspiration for the theme of the 2025 National Library Week: "Drawn to the Library."Desktop Version
The ruins of Italica, Andalusia, Spain
The ruins of Italica, Andalusia, Spain
It was the year 206 BCE. In the wake of the decisive Roman victory against the Carthaginians at the Battle of Ilipa, General Publius Cornelius Scipio built a settlement for veterans on the banks of the Guadalquivir River, in modern-day Spain. It was named Italica and was the first Roman settlement on the Iberian Peninsula. The city flourished in the following centuries and was the birthplace of two Roman emperors, Trajan and Hadrian.Desktop Version
Anniversary of the British Museum
Anniversary of the British Museum
January 15, 1759, marked the opening of a place that would become the pride of London, a hub of global history, and a keeper of countless stories: the British Museum. For the first time, a national museum flung its doors wide open, offering free access to knowledge and culture for all. The story begins with Sir Hans Sloane, an Anglo-Irish physician and avid collector. His collection of more than 71,000 items, ranging from books and manuscripts to botanical samples and antiquities, formed the museum"s foundation. Fast-forward nearly 266 years, and the museum houses more than 8 million objects, the largest collection of artifacts in the world, although only about 1% of the collection is currently on display. Its treasures span continents and millennia, from the Rosetta Stone—key to deciphering ancient Egyptian hieroglyphs—to the Parthenon Marbles, the Benin Bronzes, and samurai armor.Desktop Version