과학 기사

Even if math doesn’t rank high on your list of favorite subjects, chances are you still look forward to Pi Day. That’s because though the discussions may begin with Pi — the ratio of the circumference of a circle to its diameter — they invariably end with a piece or two of yummy pie! The event is commemorated on March 14 because though the irrational number (its decimal representation never ends and never repeats) has been calculated to over ten trillion digits, it is widely recognized as 3.14....

On Sunday, March 12, most Americans will ‘lose’ an hour by moving their clocks forward sixty minutes. This small sacrifice that marks the start of Daylight Saving Time (DST) is designed to allow residents to enjoy longer days during the upcoming spring and summer months....

The steady increase in global temperatures has been particularly disastrous for the polar ice caps. Experts warn that if this trend continues, there will be no late summer ice in the Arctic region by the 2030’s. The most effective solution, of course, is to reduce our greenhouse gas emissions before it’s too late. But since that is not happening, scientists are frantically trying to come up with alternative ways to try to reverse the situation....

The about million species of insects known to humanity thus far have managed to neatly fit into one of 31 existing scientific orders. However, when George Poinar, Jr., the world’s leading expert on plant and animal life forms, found preserved in amber, saw the carcass of this 100-million-year-old insect, he knew it would require its own scientific order – an incredibly rare event....

While the world is still debating the safety of self-driving cars, the futuristic city-state of Dubai, in the United Arab Emirates, is preparing to launch an autonomous aerial taxi. Starting in July, commuters will be able to summon the world’s first passenger drone, the EHang 184, to transport them to their desired destination without having to deal with Dubai’s congested freeways....

About forty light years, or 235 trillion miles, away in the constellation Aquarius lies a planetary system with seven Earth-sized planets, at least three of which could be habitable. The exciting news was revealed to the public at a NASA press briefing and through the release of a study in the journal Nature on February 22....

It has always been believed that the final segment of the human vertebral column, the coccyx, or tailbone, is the remnant of a lost tail. Now, some researchers assert it may be the vestige of not one but two tails, both of which, humans and their closest relatives (great apes) managed to shed over millions of years of evolution....

In January 2016, Professor Mike Brown, the California Institute of Technology researcher who demoted Pluto to dwarf status, reported that he and some colleagues had discovered evidence of a ninth planet in our solar system. Dubbed Planet X, the gaseous giant believed to be two to three times the size of Earth, purportedly has a highly elliptical orbit and takes over 20,000 earth years to revolve around the sun. Though exciting, the find was based on computer simulations, which means that no one has ever seen this mysterious planet....

The fact that the Dionaea muscipula, or Venus flytrap, feeds on unsuspecting insects by luring them into its jaw-like leaves with sweet-smelling nectar has been known for centuries. However, scientists thought the prey only provided the plant with essential nutrients like nitrogen and phosphorous that are severely lacking in their native habitats – the subtropical wetlands of North and South Carolina. They had assumed that like other vegetation the carnivorous plants obtained their energy through photosynthesis – using light energy to convert carbon dioxide and water into sugar and oxygen. It turns out they were wrong....

A large otter the size of a wolf, roamed the wooded marshlands of China’s Yunnan Province about six million years ago. Xiaoming Wang, curator of vertebrate paleontology at the Natural History Museum of Los Angeles County in California, and her team arrived at this conclusion after an extensive study of fossils found in the 6.2 million-year-old sediment of the Shuitangba coal mine in Yunnan, China in 2010 and 2015....

Unmanned aerial vehicles, or drones, have tremendous potential to deliver emergency supplies to remote or disaster-struck regions. However, they are expensive to mass produce and often require special pads to launch and land safely. Additionally, the need for the aircraft to maintain enough battery life to return, cuts the delivery distance to half. But these issues may be history, thanks to an affordable and disposable drone that is designed for a one way journey....

Move over, Atlantis! A real lost continent has been discovered by a team of geologists led by Lewis D. Ashwal from the University of the Witwatersrand in South Africa. The scientists, who have named it Mauritia, believe that the landmass was once part of Gondwana, the supercontinent that included most of the landmasses in the modern-day Southern Hemisphere, and the Arabian Peninsula and the Indian subcontinent that are now part of the Northern Hemisphere....

New Zealand is no stranger to beached whales. Every year, rescuers help refloat many disoriented mammals that get stuck in the coastal waters or sand during low tide. However, last week’s simultaneous stranding of two pods, totaling over 650 pilot whales, in the shallow muddy waters of Golden Bay at the northwest tip of South Island is almost unprecedented. Local marine experts say it is the largest known whale stranding since 1985 when 450 of the mammals were found beached in Auckland, and the third largest on record....

In retrospect, 2016 was a banner year for exploding devices. The trend began when hoverboards — two-wheeled self-balancing motorized devices — randomly began to burst into flames, hurting riders and causing millions of dollars in property damages. Samsung’s Galaxy Note 7 mobile phone, which debuted to stellar reviews in August faced similar issues and was withdrawn from the market by October. It turns out that all the mishaps were the result of malfunctioning lithium-ion (Li-ion) batteries used to power the devices....

Gordon, the barista at San Francisco’s Cafe X, will not greet you by your name or wish you a pleasant day. However, the one thing Gordon will guarantee is “precision crafted specialty coffee in seconds, the way the roaster intended.” That’s because Gordon is not a human, but a robotic arm programmed to make the perfect cup of java, using beans and recipes from local favorites like Peet’s, Verve Coffee Roasters and AKA Coffee....

A mako shark is being dubbed the “Energizer Bunny” after traveling a distance of half the globe, or 13,000 miles (just over 21,000 km), in less than two years. According to researchers at the Nova Southeastern University's (NSU) Guy Harvey Research Institute (GHRI), it is the longest track recorded in the Atlantic Ocean by a tagged mako shark....

To get into the spirit of last night’s NFL Championship game between the Atlanta Falcons and the New England Patriots, astronauts aboard the International Space Station (ISS) also decided to play “ball.” In a video released by NASA, Tim Kopra is seen gently tossing a football down the length of the ISS. By the time it got to the end, the ball had covered an astounding 564,664-yards or the distance of 5,646.64 football fields!...

Avid Pokémon video and card game fans were recently called upon to use their expertise for an unusual task – to help scientists understand the inner workings of the brain. Specifically, Weiwei Zhang, an assistant professor at the University of California, Riverside, wanted to learn the connection between the short-term — or working memory — and long-term memory....

NASA’s Near Earth Object (NEO) Observations Program has discovered and cataloged over 15,000 Near Earth Asteroids (NEAs) since they began scouring the skies in 1998. However, every now and again, one manages to escape their powerful telescopes and keen eyes. This was certainly the case with asteroid 2017 BS32, which was discovered on January 30 just three days before its close encounter with Earth....

For many of us, the mere thought of wiggling fingers approaching our rib cage or moving towards our underarms is enough to elicit squeals of laughter and giggles. However, while we all know that tickling makes us happy, Michael Brecht, a professor at Berlin’s Humboldt University, says, it is “one of the most poorly understood forms of touch.”...

When geologists from the University of Toronto discovered water dating back 1.5 billion years at the Kidd Mine in Ontario, Canada, in 2013, they thought they had hit the jackpot. However, digging further inside the world’s deepest base metal mine led to an even bigger discovery — water that has been locked in the earth’s crust for at least 2 billion years!...

At the recent Consumer Electronic Show in Las Vegas, Korean car manufacturer Hyundai unveiled three battery-powered Iron Man-inspired robotic suits. Though the stylish exoskeletons developed as part of the company’s “Next Mobility” initiative, will not enable users to soar in the skies like the superhero, it will give them earthly “super powers” like mobility, strength, and endurance....

Mention the word refugees, and the image that comes to mind is that of humans that have been forced to leave their countries due to war, persecution or natural disaster. Botswana, a landlocked country in Southern Africa, is facing a different kind of refugee crisis – one caused by the hundreds of thousands of elephants that have fled their homelands to escape ruthless poachers....

If you thought the captivating creatures in the movie adaptation of J.K. Rowling’s Fantastic Beasts and Where to Find Them, looked and acted somewhat familiar, you are not wrong. That’s because to create the mythical creatures, animators from three visual effects companies, Framestore, Rodeo FX, and MPC, drew inspiration from real-life animal physiology and behavior....