مقالات بها 200-400 كلمة

On January 4, the Great Internet Mersenne Prime Search (GIMPS), a group of volunteers who use freely available software to search for Mersenne prime numbers, announced the discovery of a new “largest known prime number.” For those that need a refresher a prime number is a positive integer that can only be divided by itself and 1. Since they follow no set pattern, the numbers are hard to discover, which is probably why mathematicians are continually challenging themselves to find the next big one....

If you live on the US East Coast, you have probably already enjoyed several “snow days” due to this year’s extreme winter weather. Unfortunately, children in the remote Oymyakon village in Siberia, Russia are not as lucky. They do after all reside in the “coldest inhabited place on Earth,” where the town's sole school closes only when temperatures drop below -61.6 degrees Fahrenheit (-52 degrees Celsius)....

With fewer than 10,000 cheetahs left in the wild, the addition of even a single cub is hailed as a victory. Hence, you can only imagine the excitement caused by the January 3, 2018 announcement of the birth of eight cheetahs at the St. Louis Zoo in Missouri. According to the Association of Zoos and Aquariums (AZA) which manages 12 cheetah conservation facilities — including the one at the St. Louis Zoo — this is the first time such a large, healthy litter has been born. Previously recorded births have averaged between three to four cubs....

French graphic design firm Super Terrain, has come up with an ingenious way to capture the essence of Ray Bradbury’s best-selling novel, Fahrenheit 451. The company’s recently released special edition copy can only be read by applying heat to the blackened pages....

While most hotels undergo makeovers, very few get upgraded as frequently as the ICEHOTEL in Jukkasjärvi, Sweden. Constructed entirely from a mixture of snow and ice, or “snice,” the structure has been rebuilt from the ground up every year since 1989, with each rendition more stunning than the previous. The 28th ICEHOTEL, which opened for business on December 15, is no exception....

Ever since Apple introduced the front-facing camera in 2010, selfies have become the undisputed king of social media. The incessant need to share breathtaking self-portraits on popular mobile photo services like Instagram and Snapchat has often proved to be dangerous and, in some cases, even deadly. Fortunately, that will not be the case for those using a new art installation in Columbus, Ohio, which transforms an ordinary phone selfie into a 14-feet-high 3D sculpture, which can be admired by all....

Milan-based sushi chef Yujia Hu is making headlines with his innovative “shoe-shi” creations. The intricate works of art that resemble popular sneakers are made using strands of black seaweed called nori, sashimi, rice, and any other edible ingredients needed to recreate the streetwear it is being modeled after....

With the New Year just weeks away, you are probably looking forward to watching the dazzling fireworks shows that will usher in 2018 worldwide. Unfortunately, the over ten million visually impaired and blind Americans, and scores more around the globe, have never been able to experience this joyful celebration. That may change soon thanks to Feeling Fireworks, a tactile fireworks experience invented by the masterminds at the Disney Research Lab in Switzerland....

The United Arab Emirates (UAE), a federation of seven monarchies on the Arabian Peninsula, is mostly a desert. However, this has not deterred the leaders from setting and achieving lofty goals that include massive building projects, most bordering on the impossible. Dubai, the UAE’s largest and most populous city, is home to the world’s tallest building, the world’s biggest mall, as well as the world’s second largest choreographed fountain system. On September 26, UAE officials announced yet another ambitious project – a space simulation city, the world’s largest of course!...

While Black Friday and Cyber Monday help kickstart the holiday shopping season, #GivingTuesday, which will be observed on November 28, attempts to galvanize the season of giving. Now in its sixth year, the charitable day uses the power of social media to encourage organizations and individuals to donate funds or resources to worthy causes. Created by the team at the Belfer Center for Innovation & Social Impact at New York City’s 92nd Street Y, its mission is to bring positive change to communities through giving....

Since 2015, members of the Incredible Science Machine have been mesmerizing fans with their complex chain reactions using tens of thousands of dominoes and props. This year was no exception. On March 23, the team set into motion their latest spell-binding creation that culminated in the toppling of a massive centerpiece comprising 76,017 dominoes....

On October 20, British adventurer Tom Morgan soared over South Africa seated in a camp chair strapped to 100 helium balloons. During the two-hour flight, the balloonist covered 16 miles and reached heights of up to 8,000 feet. Though the daredevil later called the experience “unbelievably cool,” he did admit feeling “somewhere between terrified and elated” during the flight....

On October 26, Saudi Arabia made history by becoming the first country in the world to grant citizenship to a non-human. The stunning announcement came shortly after Sophia, a humanoid robot, had completed a live interview at the Future Investment Initiative held in the capital city of Riyadh from October 24 to 26. The three-day summit was organized by the Public Investment Fund of Saudi Arabia to connect the world’s most powerful investors, thought leaders, and public officials to future innovations....

Earlier this year, National Geographic released a list of the world’s 21 most beautiful beaches. High among them, especially for sea-shell lovers, is Shell Beach. Located in the Shark Bay World Heritage Area in Western Australia, it is home to a 37-mile (60 km) stretch of white cockle shells....

Wildlife filmmakers know to expect the unexpected when observing animals in their natural habitat. For a PBS Nature film crew trying to stealthily capture footage of Arctic foxes in the freezing Arctic tundra that meant losing a hidden camera to the curious animals....

In late September, Gregory Breton and his team were returning to their campsite after spending seven long hours scouting the hot, dusty, Moroccan Sahara for sand cats. Suddenly, just four kilometers away from their destination, they noticed three pairs of gleaming eyes. Upon getting closer, the researchers realized they had stumbled upon something that, to their knowledge, had never been encountered in the wild before — sand cat kittens!...

With their thick white-gray fur and black rings, snow leopards are often hard to see against the rugged mountains that they call home. However, a team of photographers that included Mike Birkhead, has managed to capture amazing footage of this elusive cat walking away unscathed, after tumbling off a steep cliff....

Earlier this year in June, a villager in Garissa County, Kenya stumbled upon a rare sight — two white giraffes! Having never seen anything like it before, he immediately ran over to inform the rangers at the nearby Hirola Conservation Center, established to protect the critically endangered hirola antelope. Cameras in hand, the troopers rushed to the area to capture the first-ever video of the extremely rare specimens, who fortunately, appeared to be in no hurry to leave....

A team of astronomers, led by Alexander Boetticher of the University of Cambridge have stumbled upon what is being touted as our galaxy’s smallest known star. According to experts, EBLM J0555-57Ab, (57-Ab), which is slightly larger than Saturn, is the smallest possible size for a star. Boetticher says, “Had this star formed with only a slightly lower mass, the fusion reaction of hydrogen in its core could not be sustained, and the star would instead have transformed into a brown dwarf."...

Tired of having to choose between dark, milk, or white chocolate? Then you may want to try the pink-hued ruby. Created by Swiss chocolatier Barry Callebaut, the all-natural confection is the first new variety to come to market since Nestlé introduced the world to white chocolate in 1930....

Innovations like 3-D printing have enabled scientists to make significant progress in manufacturing various bioengineered organs and tissues. However, the one organ that has been hard to replicate is the human heart. That’s because current technology is unable to replicate the network of tiny blood vessels that transport oxygen inside a tissue as dense as the human heart muscle....

On Monday, August 21, millions of Americans across the country donned their protective eyeglasses to watch the highly anticipated total solar eclipse. Though the eclipses, which occur about every 18 months, are not rare, this one was historic. It was not only the first total solar eclipse visible from the mainland U.S. in more than 38 years, but also the first to be seen coast to coast in almost a century....

For the past four years, the Minato Mirai district of Yokohama, Japan, has been bringing Pokémon’s most famous character to life with a Pikachu Outbreak Festival. The event, which features numerous fun activities, including colorful parades with thousands of people dressed in Pikachu costumes, began in 2014 to promote an upcoming Pokémon movie. It was such a success that its sponsors, The Pokémon Company, decided to make it an annual, week-long extravaganza....

Governments, corporations, and even individuals concerned about losing valuable data or photos in the event of a cataclysmic disaster can now rest easy thanks to the recently opened Arctic World Archive. Located 300-meters (984-feet) below the ground inside an abandoned coal mine in Svalbard, a Norwegian archipelago between mainland Norway and the North Pole, the “Doomsday Vault” is equipped to keep information safe in the event of a natural or man-made catastrophe....