과학 기사

A 14-year-old with a vocabulary comprising four or five rudimentary words may not sound impressive. However, it sure is when the speaker happens to be an orca, or killer, whale! The amazing discovery along with the recording of the vocalization was unveiled in a January 31 study published in the journal Proceedings of the Royal Society B....

If you were among the millions of people that watched NBC’s replay of the opening ceremony of the 2018 Winter Olympics in PyeongChang, South Korea on Friday, February 9, you might have seen an airborne snowboarder, a bird flapping its wings, and the iconic Olympic Rings, light up the skies. While they may have appeared to be digital fireworks, the mesmerizing show was the result of thousands of tiny drones preprogrammed to follow complicated flight paths to form the shape-shifting images....

RZ Piscium, a star located 550 light years away in the constellation Pisces, has long intrigued researchers with its strange “winking” behavior. During the erratic episodes, which last as long as two days, the celestial body becomes about ten times dimmer and discharges a larger than normal amount of energy at infrared wavelengths, indicating the presence of enormous dust clouds....

The American alligator (Alligator mississippiensis) is known to be a crafty and fierce predator that devours anything it can snare. However, given that the reptile lacks salt glands, scientists had always believed that its diet was restricted to the fish and crustaceans that dwell in its freshwater habitat. Now, a new study suggests that the opportunistic beasts also gobble down saltwater inhabitants like crabs, sea turtles, stingrays, and even sharks....

On January 31, millions of stargazers around the globe will witness what promises to be a spectacular total lunar eclipse. While the celestial event is always special, what makes Wednesday’s particularly noteworthy is that it coincides with both a blue moon and a supermoon. Hence the moniker “super blue blood moon.” According to NASA, the lunar trifecta is the first of its kind in 35 years and will not occur again until 2037....

If Michael Strano has his way, homes and streets of the future will be lit up with “green” energy — literally — from glowing plants and trees. While that may sound like a lofty goal, the Massachusetts Institute of Technology (MIT) professor of chemical engineering and his team are well on their way to realizing the dream with a luminescent plant, which they hope will someday replace your bedside or table lamp!...

Science fiction thrillers frequently feature accidents that cause astronauts to float away into space. Though this has yet to happen in the real world, it is a risk every astronaut is well-aware of when embarking on a spacewalk or Extra Vehicular Activity (EVA). To prevent the nightmare scenario, space explorers are not only tethered to the spacecraft but also fitted with a backup safety kit....

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)....

For the past 50 years, the annual Consumer Electronics Show (CES) has been impressing Americans with innovative products created to enhance their lives. This year’s show, held in Las Vegas from January 8 to 12, was no different. Over 180,000 people flocked to view and test the thousands of gadgets that consumers can look forward to purchasing in the near future. Here are a few that grabbed our attention....

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....

For most people, the mention of glitter brings back fond memories of colorful preschool and kindergarten projects. However, the sparkly material is also prevalent in everyday grown-up products like makeup, decorations, and even iPhone cases. Unfortunately, while the fairy-dust-like substance is great for lifting our spirits, it is not so good for the environment, which is why one researcher is calling for a worldwide ban....

The extreme hurricanes and devastating wildfires of 2017 caused $306 billion in total damage, making it the most expensive year on record for natural disasters in the United States. Unfortunately, 2018 has commenced with extreme weather conditions of its own. After a frigid last week of December, the East Coast of the United States is being pummeled with a “bomb cyclone” winter storm that has brought bitterly cold temperatures, deep snow, and hurricane-speed winds to the region....

Tales of the Abominable Snowman, or Yeti, that roams the Himalayas have been a fixture in the Nepalese, Tibetan, and Bhutanese cultures since the 1800s. The belief in the mythical creature spread to the western world in 1951, following British explorer Eric Shipton’s discovery of a massive footprint in the snow while seeking an alternate route to Mt. Everest. Numerous expeditions, many sponsored by large organizations, spent months searching the mountain ranges for the elusive, ape-like creature. Though none succeeded, the belief in yeti’s existence never waned....

The reason animals “waste” so much time sleeping has always been somewhat of a mystery to scientists. The popular belief is that resting rids brain cells of toxins, helps consolidate fresh memories and prepares the mind for a new day of learning. However, a new study by a team of research students at the California Institute of Technology has unveiled it’s not just creatures with brains that snooze - even the brainless jellyfish need their zzz’s!...

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....

Kids, whose vivid imaginations know few boundaries, frequently come up with invention ideas that range from life-changing to downright wacky. However, few see them come to life mainly because adults are not convinced of their practicality. That is about to change thanks to Little Inventors, an innovative project that connects aspiring inventors to manufacturers and artists who can help bring even the most impossible sounding contraption to life....

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!...

Facial recognition is a complex task which requires as many as 200 neurons in the brain’s temporal lobe, called “face patches,” to fire up simultaneously within milliseconds. Hence the skill has always been believed to be the realm of “intelligent” animals such as humans, monkeys, apes, dogs, and horses. Now, British scientists have found that the unassuming cud-chewing sheep also possess this skill....

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....

Over the past 30 years, Australia’s Great Barrier Reef has experienced a 50 percent loss in coral. Though part of the decline is being attributed to the warmer ocean temperatures caused by climate change, about half of the damage is due to the proliferation of the crown-of-thorns starfish (COTS). The deadly predators can devour as much as 53 square feet (five square meters) of live coral annually....

While a wild cat chasing down prey sounds perfectly reasonable, one who sprints to fetch sticks might seem a little bizarre. However, that is precisely what Serabie, a rescued adult lioness at the Emoya Big Cat Sanctuary in South Africa’s Limpopo province, loves to do....

Before astronauts embark on a mission to Mars, it is imperative for scientists to know everything they can about the impact of long term space travel on the human body. Previous studies have shown that extended exposure to microgravity causes muscles and bones to weaken, deteriorates vision, and, in some cases, even alters the astronaut’s DNA. Now, there is evidence that spending a long time in space could also permanently change the brain’s structure....