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Computer Science EDU Week
Computer Science EDU Week
In the decidedly pre-digital 19th century, English polymath Charles Babbage developed his design for an Analytical Engine, a machine that incorporates many of the functional ideas of modern computers. The diagram in our photo today shows the plans for the inner workings of Babbage"s mechanical computer. Construction was difficult and expensive, given the precision required for the crafted metal parts, so Babbage tinkered on his own but died before he saw his vision realized. Engineers have since built working models of Babbage"s machine.Desktop Version
Salzburg, Austria
Salzburg, Austria
If you know of Salzburg, Austria, it"s probably because of Mozart and not monsters. But if your holiday wish is to be chased by an unseemly seasonal demon, the narrow, medieval streets of this city are the place to be tonight. Or this *would* have been the place to be if a different ghoul hadn"t raised its unwelcome, spiky head—the coronavirus continues to unleash its real-world horrors, canceling tonight"s scheduled Krampus runs, just as it did last year. Allow us to explain.Desktop Version
Cheetah mother and cub
Cheetah mother and cub
Today we"re in Kenya"s Masai Mara National Reserve to celebrate Wildlife Conservation Day, which also happens to be International Cheetah Day—two reasons to extend our appreciation for this elegant mother and cub. These lithe and lightweight cats are built for speed, with compact heads, thin torsos, and long legs that help them accelerate up to 70 mph when hunting gazelles or antelopes on the savannah. Because cheetahs have uniquely flexible spines, they"re able to make sharp, sudden turns, even during a high-speed chase. Individual cheetahs tend to avoid one another, but a cub like this one will stay with its mother for about 18 months, and a female cub may stick with mom into adulthood. Some males are territorial and will form small groups, called coalitions, to defend a prized area.Desktop Version
Frost on autumn leaves
Frost on autumn leaves
You can almost hear frost-coated autumn leaves crunching under your shoes as you walk through the woods. Though the calendar says it"s still autumn, scenes like this highlight the colder temperatures as winter arrives in the Northern Hemisphere.Desktop Version
Denali National Park
Denali National Park
Someone ought to tell these Dall sheep they don"t blend in here at Polychrome Pass. Their white coats may be great camouflage against the Alaskan snows, but the warm tones of this tundra make them stick out a bit. And they aren"t the only thing sticking out in this national park: It"s home to the tallest mountain in North America.Desktop Version
Antarctica Day
Antarctica 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
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
Rainbow Mountain
Rainbow Mountain
Even to the huge bummer that is glacial melting, there are bright sides: The radiant colors of Vinicunca (aka Rainbow Mountain) might have gone unseen had rising temps not melted the peak"s glacial caps beginning in the 1990s. Rainbow Mountain"s streaky sediment layers, multicolored like a wildflower bloom, were revealed by the 2010s. Since then, it"s become the most visited natural attraction in the lofty Peruvian Andes of the Cusco region. At more than 17,000 feet above sea level, Rainbow Mountain isn’t the tallest peak in the area—towering Ausangate is nearly 21,000 feet in elevation—but most visitors will need time to acclimatize before attempting the trek to the summit.Desktop Version
Celebrating Panama s independence
Celebrating Panama s independence
What do you get when you cross historic feats of engineering with unmatched natural beauty? Answer: This photo of a suspension bridge in a rainforest. Or more generally: Panama, where the photo was taken.Desktop Version
Penn Station
Penn Station
If this image of New York City"s Pennsylvania Station seems straight out of a classic film noir, it"s for good reason. The photo was taken in the 1950s, just a few years before the city"s beloved Beaux-Arts style masterpiece was dismantled and then demolished so that Madison Square Garden could be built atop its warren of walkways and train lines.Desktop Version
Native American Heritage Day
Native American Heritage Day
While our photo today focuses on the colorful dress and jewelry of the Zuni Olla Maidens, people who"ve been lucky enough to see these women perform traditional songs and dances might have been distracted by their "ollas"—that’s the name for the large clay jars that the women balance on their heads as they dance. The unusual prop has practical origins. The Zuni people have thrived in the Zuni River Valley in New Mexico for 4,000 years, and their handmade clay ollas have long been used to store food and water. A practical—if tricky—way for a Zuni woman to carry a heavy jar of water back home was to balance it on her head. Over time, the women began incorporating this skill into their dances, thus the formation of the Zuni Olla Maidens.Desktop Version
Happy Thanksgiving
Happy Thanksgiving
For this food-centric holiday, we"re featuring two small but prodigious eaters, a pair of Eurasian red squirrels. These cheerful omnivores dine on the rich menu of available offerings in the forests of the UK, primarily Scotland, where our friends today were photographed noshing.Desktop Version
Chocolate Hills
Chocolate Hills
In late November, the dry season arrives in the Bohol province of the Philippines to create a magical confection: The green grass that covers these rolling, conical mounds begins to turn brown, transforming the area into what looks like endless hills of chocolate. At least 1,260 of these "Chocolate Hills" are spread across about 20 square miles. The unusual landscape has become a robust tourist attraction, leading the regional government to construct a viewing complex amidst the hills in the town of Carmen.Desktop Version
Fibonacci Day
Fibonacci Day
It"s a bit of a fib that Fibonacci, the 13th-century Italian math whiz, was the first to sketch out a number sequence in which each number is the sum of the two preceding numbers: 0, 1, 1, 2, 3, 5, 8, 13, and so on forever. In fact, scholars in India described the sequence centuries before Fibonacci, and they probably weren"t the first to figure it out either. But in any case, each November 23—that is, 11/23—we celebrate the infinite series known as the Fibonacci sequence.Desktop Version
Irohazaka road
Irohazaka road
If you"ve ever wanted to learn written Japanese, a joy ride on this undulating road offers an unexpected tutorial. The hairpin turns in our photo are just a few of the 48 curves you"ll negotiate on your way up one part of Irohazaka road and down another—together they make a scenic loop in the highlands outside the city of Nikkō. That"s one switchback for each of the 48 hiragana symbols in an ancient Japanese writing system, with each marked by a sign showing one symbol. Not a bad visual aid for the still-learning visitor!Desktop Version
The Great Glen
The Great Glen
Was this photo taken in a peppermint forest? This rare and delicate hoarfrost may look like a confectioner"s coating, but it"s just the ice that forms when the Scottish Highlands" fog mixes perfectly with a sharp cold snap.Desktop Version
World Children s Day
World Children s Day
For World Children"s Day, we"re featuring an aerial view of a larger-than-life painting on the summit of the Moléson in the Swiss Prealps. The 16,000-square-foot fresco is titled "Un Nouveau Souffle" (A New Breath) and depicts a child blowing clouds toward the horizon. It was created by French-Swiss artist Saype—real name Guillaume Legros—who is known for his grassy graffiti around the world. The eco-friendly artist uses biodegradable paints made from natural pigments such as coal and chalk, so by the time you read this, his land art will have already disappeared into the soil.Desktop Version
Zion National Park, Utah
Zion National Park, Utah
Today, we"re celebrating the 102nd anniversary of southwest Utah"s Zion National Park with a visit to its Subway slot canyon. Zion is defined by its breathtakingly steep red cliffs, its maze of sandstone canyons, and its waterfalls with colorful hanging gardens. Visitors here can trek for miles, ducking into crevices and resting in canyons once occupied by the Ancestral Puebloans.Desktop Version
Bohemian Switzerland
Bohemian Switzerland
Today we rhapsodize about the beautiful region called Bohemian Switzerland, but we"re hundreds of miles from Switzerland. The name for the area originated with Swiss painters visiting the Kingdom of Bohemia, now the western half of the Czech Republic. They were reminded of their homeland by this region"s dramatic sandstone formations. Turns out the acclaimed artist named Mother Nature finds inspiration here, too, turning the Bohemian Switzerland’s pockets of thick forest into a canvas of warm oranges and yellows every autumn.Desktop Version
Corkscrew Swamp Sanctuary
Corkscrew Swamp Sanctuary
Hey you: Take a hike! And we mean that in the nicest possible way. After all, what"s nicer on a crisp November day than lacing up those hiking boots and hitting the trail? (Especially when that day happens to be Take a Hike Day!) Of course, there might be no trails to hit were it not for state and national park rangers, foresters, nonprofit employees, volunteers, and others who forge them through the wilderness. Or in some cases build them, as with this boardwalk in the Corkscrew Swamp Sanctuary near Florida"s Gulf Coast.Desktop Version
Glenfinnan Viaduct
Glenfinnan Viaduct
Muggles from around the world flock to this iconic scene at the top of Loch Shiel in the West Highlands of Scotland to marvel at the 21-arched Glenfinnan Viaduct, also known as the "Harry Potter bridge." The curving structure was made famous in the film adaptations of J.K. Rowling"s novels as part of the route taken by the Hogwarts Express, which carries students to and from the wizarding boarding school at the start and end of every term. And today is a reason to celebrate for Potterheads, as we are marking the 20th anniversary of Harry Potter"s big-screen debut.Desktop Version
Manatee Awareness Month
Manatee Awareness Month
Today we wish this gentle giant of Florida"s warm waters a safe and happy Manatee Awareness Month. Closer cousins to elephants than to fellow sea mammals such as whales and dolphins, manatees follow a fully herbivorous diet of sea grasses and other marine plants—so these fish hanging out with our buddy here needn"t fear becoming a manatee"s lunch.Desktop Version
First Cliff Walk
First Cliff Walk
When it comes to breathtaking mountain scenery, it"s difficult to top the village of Grindelwald in the center of the Swiss Alps, flanked as it is on all sides by towering peaks such as the Mannlichen, Faulhorn, and Wetterhorn. In winter, Grindelwald is home to one of the biggest ski resorts in Switzerland"s Jungfrau region, and even in the offseason there"s still plenty of adrenaline-inducing activity to be found here.Desktop Version
Ronda, Spain
Ronda, Spain
Today we"re visiting the mountaintop town of Ronda in the Málaga province of Andalusia, in the south of Spain. First settled by the Celts and later inhabited by the Romans and Moors, this dramatic cliffside setting is split in two by the El Tajo gorge, a rocky drop plummeting nearly 400 feet to the Guadalevín River. There are three bridges that span the gorge, the largest and newest of which features in the center of our homepage image and is—appropriately enough—called Puente Nuevo (New Bridge). Despite its name, the bridge is more than a couple of centuries old—it was completed in 1793 and connects the Moorish old town, La Ciudad, with the new town, El Mercadillo.Desktop Version
Beavers Bend
Beavers Bend
To take in these incredible fall colors, we"ve come to Beavers Bend, a 1,300-acre state park and resort in the southeast corner of Oklahoma. It"s a scene that may confound your expectations for the wilds of the "OK" state. The "bend" referenced in the park"s name is a nearly 180-degree turn in Mountain Fork, the river that runs through the park.Desktop Version