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Diving into World Oceans Day
Diving into World Oceans Day
Humans have been trying to construct artificial coral reefs since at least the 1950s, with only marginal success. But in 1979, German scientist and inventor Wolf Hilbertz created ‘Biorock,’ also known as ‘Seacrete.’ Hilbertz found that by directing a low-voltage charge to a metal frame submerged in seawater, calcium and other minerals in the water would build up on the frame. This mineral coating is so similar to the mineral composition of natural reef substrate that it creates a good habitat for the growth of corals. After the minerals have begun to coat the surface, divers transplant coral fragments from other reefs, attaching them to the structure’s frame. These coral pieces begin to bond to the accreted mineral substrate and start to grow, typically faster than in natural environments. Eventually the reef looks and functions like a natural reef ecosystem rather than an artificial one.Desktop Version
Blink and you ll miss it
Blink and you ll miss it
The mountain hare is doubly hard to catch sight of, because along with its tremendous speed, it"s terrifically well camouflaged. These two traits help the iconic species survive in the rugged mountains and uplands of northern Europe and Asia—this hare is dashing across a heath in the Scottish Highlands. When they have to, these speedy leporids can dart away as fast as 50 mph, at least for short distances, allowing them to outrun predators and disappear safely into the heather. But a would-be predator may not even spy them to begin with—mountain hares change coats, or molt, several times a year, their fur going from brown and gray in summer, to white-gray in winter, helping them to blend into their surroundings whatever the season.Desktop Version
Helloooooo, Innsbruck
Helloooooo, Innsbruck
Today we"re featuring the Four Hills Tournament, a set of four ski jump events that starts today. This image shows a jumper in the 2017/2018 competition. The annual tourney, which wraps up in early January, starts in the German towns of Oberstdorf and Garmisch-Partenkirchen, and then moves to Austria, with events in Innsbruck, like the qualification run in today"s image, and Bischofshofen.Desktop Version
Yosemite National Park anniversary
Yosemite National Park anniversary
There"s a reason why famed American photographer Ansel Adams fell in love with Yosemite National Park: vistas like today"s image of Half Dome. The park, in central California"s Sierra Nevada range, has been a popular destination for artists, mountaineers, settlers, and nature lovers since the mid-1800s. To protect it from logging and overgrazing by cattle, Congress designated Yosemite a national park on this day in 1890. It"s one of the most visited parks in the US, with more than 3 million visitors a year.Desktop Version
Longs Peak, Rocky Mountain National Park
Longs Peak, Rocky Mountain National Park
One of the 53 "fourteeners" in Colorado—mountains that exceed 14,000 feet—Longs Peak still manages to reach higher into the heavens than any other mountain in Rocky Mountain National Park at 14,259 feet. Thousands of climbers set off every year to attempt the summit. Some climbers will try to reach the peak of every fourteener in the US during their lifetimes—that"s 96 different mountains.Desktop Version
Whale hello there!
Whale hello there!
It"s whale-watching season here off the coast of Massachusetts and these humpback whales and their seagull friends are in a feeding frenzy. Here"s a little tip if you ever find yourself seeking out humpbacks: Look for birds. Where there are swarms of dive-bombing birds, there will be fish, and where there are fish, there may be humpback whales.Desktop Version
Ardez, Graubunden, Switzerland
Ardez, Graubunden, Switzerland
Perched on a terrace above the Inn Valley at 4,790 feet, Ardez is a hidden gem in eastern Switzerland renowned for its deep cultural roots and stunning preservation of history. This picturesque village, starring in today"s image, showcases the rich traditions and unique language of Switzerland"s Romansh-speaking communities. Its homes are adorned with sgraffiti—decorative designs etched into plaster—and colorful murals, both iconic art styles of the Engadin region. Dating back to 840 when it was first referred to as Ardezis, the village"s history includes Steinsberg Castle, originally owned by the Bishop of Chur. Though destroyed during the Swabian War in 1499, the castle"s tower has been restored multiple times and stands today as a proud reminder of its past. In 1975, Ardez was chosen as a Swiss model village for its exceptional preservation efforts, which have kept its historic charm intact.Desktop Version
Red Planet Day
Red Planet Day
About 140 million miles away from Earth, the most relatable planet in the solar system orbits the sun. Mars, popularly known as the Red Planet, is the fourth planet from the sun, after Mercury, Venus, and Earth. We know more about Mars than any other planet but our own. That knowledge has been gained over centuries and has grown exponentially in recent years with the successful landings on Mars of the Curiosity and Perseverance rovers in 2012 and 2021 respectively. Today we celebrate those and other accomplishments on Red Planet Day, which coincides with the launch of Mariner 4, the first probe sent to Mars, on this day in 1964.Desktop Version
Last stop before leaving the solar system
Last stop before leaving the solar system
Official telescopic confirmation of Neptune"s presence in our solar system came on September 23, 1846, and it was a big deal partly because Neptune is the only planet in our solar system not visible with the naked eye. Credit for this discovery inspired a dust-up in the international astronomy community, as scientists from both Britain and France claimed they had been the first to predict the existence and position of the eighth and most-distant planet in our solar system before it was seen through a telescope. Eventually peace was brokered, and credit is now shared between the two factions.Desktop Version
World Population Day
World Population Day
The bustling city streets of Barcelona seem as good a place as any to mark World Population Day. More and more of us are heading to the city. It"s estimated that 2007 was the first year in which more people lived in cities than in rural areas. If current trends continue, by 2050 about two-thirds of the world population will be living in cities. City planners and government officials will need to account for this rapid increase as power grids, water supplies, public transit, and emergency services will all be stretched.Desktop Version
’Chess on ice’
’Chess on ice’
Today our photo comes from Naseby, on New Zealand’s South Island. Winter in New Zealand begins on June 1—in the Southern Hemisphere, the seasons are inverted from our own. Soon, the lakes in Naseby will freeze over, creating great conditions for outdoor curling, or what competitors call ‘chess on ice.’ And when there’s a multi-game tournament going on, that’s a ‘bonspiel’ in curling lingo. This year marks the first ever Curling World Cup—with the fourth leg of the months-long event beginning today in Beijing, China. This ultimate bonspiel unites teams from around the globe, and on May 12, 2019, we’ll know which nation swept the competition. (Curling joke!)Desktop Version
Full moon
Full moon
Each month of the year has at least one full moon, and the occasion of that full moon often has nicknames related to the season. In the Northern Hemisphere, December is usually considered the start of winter, so December"s first full moon gets the chilly nickname "cold moon." It"s sometimes called the "long night moon," since the winter solstice is just around the corner.Desktop Version
Nomads of the Gobi
Nomads of the Gobi
The Gobi Desert stretches across 500,000 square miles, covering parts of northern China and southern Mongolia. Due to the Gobi’s high elevation and high latitude, it’s a cold desert. And while we tend to think of deserts as endless sand dunes, most of the Gobi’s topography is exposed rock.Desktop Version
Celebrating freedom
Celebrating freedom
Juneteenth, also known as Freedom Day, originated June 19, 1865 to recognize the day the remaining enslaved African Americans in the Confederacy were made aware of the signing of the Emancipation Proclamation more than two years prior. This occurred in Texas—the most remote of the Confederate states—when Union troops arrived in Galveston Bay and read federal orders declaring that all enslaved people were free. Once a mostly regional observance, Juneteenth has in recent decades become a much broader celebration of African American freedom. This year in particular, it"s seen as a way to express support for the African American and Black community during a time of widespread protests against systemic racism and police brutality.Desktop Version
Spotted Lake emerges
Spotted Lake emerges
This might look like the surface of some distant planet, but Spotted Lake is much closer to home. Just north of the US border in the Okanagan Valley of British Columbia, Canada, the lake"s strange coloration is due to its high concentrations of mineral deposits. It"s a protected cultural site of the Syilx/Okanagan Nation for its healing properties. Spotted Lake is an endorheic lake, which is a basin where water collects but has no river or sea to drain into. The water level rises with rainfall during autumn and winter, but when the days grow hotter and drier in the summertime, the water evaporates and the surface of the lake lowers. It"s during these hot, dry summers in the Okanagan when Spotted Lake earns its name—large "spots" in varying hues of blue, green, or yellow become more prominent as the water level drops. The area"s closed to the public, but you can get a decent view from the highway. Binoculars recommended.Desktop Version
Ambassadors of the airwaves
Ambassadors of the airwaves
Today we"re visiting the Petit Minou Lighthouse on the coast of northwest France to mark the relationship between lighthouses and the 20th-century technology of amateur radio, commonly known as "ham" radio. The International Lighthouse and Lightship Weekend (ILLW) is an event set up every August by a group of amateur radio operators from nearly 100 countries. Activities for this ILLW weekend are organized online with individual events held at various lighthouses around the world, where ham radio operators gather to broadcast and engage with fellow enthusiasts. The aim of these gatherings is to not only foster goodwill for ham radio around the world, but also to promote awareness of lighthouse preservation and restoration, and to honor the legacy these solitary structures have had on our collective maritime heritage.Desktop Version
Vermilion Cliffs National Monument
Vermilion Cliffs National Monument
Vermilion Cliffs National Monument in Arizona features sandstone rock formations, towering hoodoos, and surreal slot canyons. The monument, established in 2000, was named after the vibrant red hues that dominate this sandstone landscape. Once you get a permit to take part in this outdoor excursion, make sure to visit the "Wave." It"s a stunning geological wonder, with flowing layers of rocks that look like red liquid that has been frozen in time. Other visual treats include Cobra Arch and the White Pocket rock formations, featuring swirling patterns in white, red, and orange.Desktop Version
Detroit Industry Murals by Diego Rivera
Detroit Industry Murals by Diego Rivera
Diego Rivera"s "Detroit Industry Murals" show off the Mexican painter"s incredible attention to detail in his depiction of the American labor industry in the early 20th century. The portion on our homepage today is from the north wall panel, and shows a busy shift at an automotive factory. It"s one of 27 frescoes that make up this collection of wall-sized paintings.Desktop Version
A summertime light show
A summertime light show
It’s the season for spotting fireflies in some parts of the US, especially in the humid or damp areas that the winged beetles love. For fireflies themselves, it’s a season of love. They create these soft flashes of light as they search for a suitable mate. The glow is produced by a chemical reaction in a firefly’s abdomen. In addition to attracting a partner, the light is believed to deter potential predators by signaling that the insect’s chemical makeup may produce a foul taste or even be toxic. The fireflies in our homepage image were photographed with a long exposure in the Philippines, where fireflies are a popular tourist attraction. Some firefly species here and in other parts of Southeast Asia are known for their synchronized flashing, creating dramatic light shows in the dark.Desktop Version
Giving Tuesday
Giving Tuesday
Social structure in elephant herds is surprisingly complex. The adults in the herd exhibit what scientists call "reciprocal altruism." That means that elephants will act in ways that give them no direct benefit—say, protecting or feeding a calf that isn"t theirs. They do that because the other elephants in their herd will do the same for them. Maybe the elephant is a good role model for Giving Tuesday?Desktop Version
Travel Sunday: Flamenco in Granada, Andalusia, Spain
Travel Sunday: Flamenco in Granada, Andalusia, Spain
Flamenco is just one highlight of Spanish culture showcased in the Granada International Festival of Music and Dance, which wraps up today. The festival takes place at venues throughout the city, including at the Alhambra, a fortified palace and high-profile tourist destination that’s steeped in history–just like flamenco. Here in the region of Andalusia, flamenco is more than just a dance. It’s a cultural expression that dates back centuries, to the Roma migration to Spain. Traditionally, the art focused on the cante–or singing–and was performed outside. The introduction of flamenco cafes in the 19th century saw the art form evolve to showcase baile (dance) and toque (guitar music).Desktop Version
‘Fringe’ takes center stage as Edinburgh celebrates the arts
‘Fringe’ takes center stage as Edinburgh celebrates the arts
It"s festival season in Edinburgh, and Scotland’s capital is bursting with creativity. Through Aug 27, the city is hosting a staggering number of music, theater, opera, dance, and other types of performances as part of the Edinburgh International Festival and the Edinburgh Festival Fringe–the world’s largest arts festival. The Edinburgh International Festival features world-class performers invited from around the world, while the Festival Fringe is open to everyone and artists are welcome to perform just about anything they dream up.Desktop Version
Earth at Perihelion
Earth at Perihelion
We"ve reached perihelion! Two weeks after winter solstice the Earth"s orbit is closer to the sun than at any other time of year—a result of the Earth"s elliptical orbit. You may think, "If we"re so close to the sun, why can"t I feel the heat?" Well, that"s because we"re only receiving about 7% more solar energy than normal, which doesn"t really have much impact on the weather.Desktop Version
Fiordland National Park, New Zealand
Fiordland National Park, New Zealand
For Waitangi Day, we"re visiting the spectacular landscape of Fiordland National Park on New Zealand"s South Island. Waitangi Day is New Zealand"s national day, established to commemorate the signing of the Treaty of Waitangi on February 6, 1840. The document was signed by representatives of the British Crown and some 500 Māori chiefs to establish British law on the islands. The treaty also created the framework for political relations between New Zealand"s government and the Indigenous Māori people. It"s considered New Zealand"s founding document and a cornerstone in the country"s history.Desktop Version
Here we mark the price of freedom
Here we mark the price of freedom
Today the United States marks Memorial Day, a day set aside to honor those members of the US armed forces who have died while serving their country. While it was celebrated independently by various towns across the country in the aftermath of the Civil War, Union General John A. Logan was the first to call for a national day of remembrance on May 30, 1868. Originally called Decoration Day, it was a day set aside for the public to offer prayers and honors for those lost to battle and to decorate their graves with flags and flowers. On the first national Decoration Day, over 5,000 widows, orphans, and other mourners attended a ceremony in Arlington National Cemetery, and placed flowers on the graves of Union and Confederate soldiers interred there. Originally only a commemoration of those soldiers killed in the Civil War, by the end of WWI it had come to be a holiday honoring all American war casualties from the Revolutionary War onward.Desktop Version