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The Earth's inner core, which boasts temperatures exceeding 9,000 degrees Fahrenheit (5,000 degrees Celsius), may not evoke images of a winter wonderland. Yet, a new study by a team of scientists led by Youjun Zhang, an associate professor at Sichuan University in China, asserts that the deepest part of our planet may be covered with a 200-mile-thick layer of "snow." However, before you rush to pack your skis, be aware that the "snowflakes" are not composed of frozen water crystals, but of tiny particles of iron!...

On Monday, January 20, 2020, Americans will celebrate Martin Luther King (MLK) Day. The federal holiday, commemorated annually on the third Monday of January, serves multiple purposes. It honors the life and legacy of the activist who led the fight for racial equality, brings focus on current civil rights issues, highlights the power of using nonviolence to bring about social reform, and inspires young people to consider joining public service....

Cotton candy is probably the last thing that comes to mind when one thinks of exoplanets. But the three giant worlds orbiting the Kepler 51 star system, about 2,600 light-years away from Earth, are so "light and fluffy" that they warrant a comparison to the beloved spun-sugar confection....

Though bushfires are a common occurrence in Australia during the summer, they have never been as devastating or as widespread as the ones currently burning across the country. Since September 2019, the blazes, fueled by dry foliage and strong winds, have scorched over 15.6 million acres (24,000 square miles) — an area larger than the state of West Virginia. Even worse, officials warn that Australia's wildfire season — which generally lasts through March — is nowhere near its end....

With no brains or nerve cells, single-cellular microorganisms are often regarded to be simple, primitive beings with few capabilities. However, a new Harvard University study suggests that protozoans, like Stentor roeselii, have the smarts to make "complex" decisions when confronted with unpleasant situations....

Happy 2020! At the stroke of midnight on December 31, 2019, cities worldwide rang in both a new year and a new decade with dazzling fireworks shows. Here are some of this year's most spectacular displays from around the world....

Christmas is all about observing beloved traditions. For some, this means attending midnight mass on Christmas eve, for others, it entails watching reruns of old classics like Elf and Home Alone. Then there are the millions for whom the holiday is incomplete without an episode of The Yule Log — a four-hour television show featuring a warm, crackling fire....

Winter lovers, rejoice! Saturday, December 21, 2019, is the winter solstice — the astronomical start of the chilly season for residents of the Northern Hemisphere. Even more exciting, the longest night of 2019 will coincide with the peak of the Ursids meteor showers, giving fans ample time to view the spectacular shooting stars!...

Hanukkah is one of the most anticipated and joyous of all Jewish festivals. Although the celebration always begins on the 25th day of Kislev, the ninth month on the Hebrew calendar, that date can fall anywhere between late November and late December on the Gregorian calendar. This year, the eight-day festival will begin at sundown on December 22, 2019, and continue through December 30, 2019....

It is often said that "a picture is worth a thousand words." That is certainly true of the mesmerizing images of fleeting moments of nature submitted by international ecologists and students for the British Ecological Society's (BES) annual photography competition. Here are a few of 2019's winning entries, announced on November 28, 2019....

On December 7, 2019, David Datuna was admiring the modern and contemporary works of art on display from 200 of the world's leading galleries at Miami's Art Basel, when hunger pangs hit. Fortunately for the New York-based artist, there was a ripe banana just waiting to be eaten. The only problem? The tropical fruit stuck to the wall with duct tape was no ordinary banana — it was an art installation that had just been sold by Perrotin, an international art gallery, for $120,000!...

The low percentage of women in science, technology, engineering, and mathematics (STEM) careers is often attributed to men being believed to be better at the sort of thinking those fields require. Though several studies have debunked the myth, they have largely been based on results acquired from various standardized tests. Now, researchers from Pennsylvania's Carnegie Mellon University have found evidence that is hard to overlook: brain scans proving that young girls and boys use the same mechanisms and networks in the brain to solve math problems....

Venice, which is built on 118 small islands in the middle of the Venetian Lagoon at the tip of the Adriatic Sea in Northern Italy, is no stranger to floods. The picturesque city experiences water surges from the rising tides at least four times a year, usually during winter....

Few American holidays are as anticipated as Thanksgiving. Observed annually on the fourth Thursday of November, the secular holiday, which marks the start of the festive season, is credited to a harvest feast shared by the early European settlers, or Pilgrims, and Native Americans in 1621. Though food remains the centerpiece of the celebration, many fun traditions have been added since. Here are some fun Thanksgiving tradition facts to share with family and friends as you enjoy the delicious meal on November 28, 2019....

Though thousands of adventurers have scaled Mount Everest, the highest and most famous of the world's 14 tallest mountains, only 40 climbers have conquered them all. Located in Asia's Himalayan and Karakoram ranges, the "eight-thousanders" each stand over 8,000 meters (26,247 feet) tall, above the so-called "death zone," where the amount of oxygen is insufficient to sustain human life for an extended period....

On November 10, 2019, nine agile mini cheetah robots, built by researchers at the Massachusetts Institute of Technology (MIT), were let off their leash to demonstrate their superior athletic abilities. The four-legged machines, controlled by their human creators, began with a warm-up run across the field in full formation. They then took turns maneuvering a soccer ball. As often happens in games, a couple of the team members got into a skirmish and jostled with each other until they both fell onto their backs. Fortunately, they reconciled for the grand finale — a perfectly synchronized backflip, one that would make even a world-class gymnast like Simone Biles proud!...

Endemic to the forests of south and southeast Asia, the silver-backed chevrotain, or Vietnamese mouse-deer, is one of the world's most elusive animals. The rabbit-sized critter is only known to science through five specimens, four of which were recorded by researchers in 1910. The fifth was killed by a hunter and donated to scientists in 1990. Since then, there have been no recorded sightings of the animals, leading many to fear they had gone extinct. Now, thanks to the efforts and persistence of a team led by biologist Andrew Tilker, the species has not only been rediscovered but also photographed in the wild for the first time!...

Unlike early space travelers, who had to consume mysterious powders, purees, and freeze-dried cubes, today's astronauts enjoy a variety of freeze-dried meals, snacks, and desserts that can be commonly found on Earth. However, delicious as the cuisine is, it pales in comparison to a freshly-cooked meal. Though the ability to cook an entire spread in space may take a few years, astronauts at the International Space Station (ISS) may soon be able to enjoy freshly-baked cookies, thanks to a newly-acquired space oven....

Most male birds try to attract mates with elegant gestures. Seabirds bob their heads and flutter their wings, while peacocks fan out their beautiful feathers. However, the white bellbird, endemic to the Amazon rainforest in Brazil, dispenses with the pleasantries and cut to the chase by shrieking in its prospective "date's" face at a deafening 125 decibels (Db)— the loudest bird call ever recorded. To put it in perspective, that is 40 Db higher than the safe hearing range for humans! Prior to this, the honor belonged to another Amazon-dweller — the aptly-named screaming piha — which has a peak recorded "song" volume of 116 Db....

Antibiotics — medications that destroy or slow down bacteria growth — are becoming increasingly less effective as the pathogens find new ways to evade the drugs. Some produce pumps that flush the antibacterial medicines out from the bacterial cell, while others modify themselves, so they are unrecognizable as targets. Now, researchers at UK's Newcastle University have recorded the germs shedding their outer skins and changing their shapes to avoid detection....

Always wanted to meet a real-life superhero? Then you are in luck for November 11 is Veterans Day, an opportunity to thank the brave men and women of the United States Armed Forces, who often risk their lives to protect our freedom. This includes all those who have served in the US Army, Navy, Marine Corps, National Guard, Air Force, and the Coast Guard....

California's relatively calm fire season ended in mid-October with several simultaneous blazes that have since scorched thousands of acres and destroyed hundreds of structures. The largest fire, the Kincade Fire, has burned through 80,000 acres and obliterated 370 structures, including 141 homes, in Northern California since October 25, 2019. In Southern California, the Maria Fire, which broke out in Santa Paula, Ventura County, shortly after 6 p.m. on October 31, 2019, has chewed through 10,000 acres and threatened the area's tens of millions of dollars' worth of avocado and lemon crops....

On October 20, 2019, Wing, a subsidiary of American multinational conglomerate Alphabet Inc., began the most advanced trials of commercial drone delivery in the US yet in Christiansburg, Virginia. Residents can now use a smartphone app to order items from Wing partners such as pharmacy giant Walgreens and local specialty chocolate and popcorn retailer Sugar Magnolia. A Wing drone will pick up the order and gently lower the package with the help of a tether outside the customer's door within an hour!...

On Sunday, November 3, 2019, most North Americans will mark the end of Daylight Saving Time (DST) by moving their clocks back an hour. This simple action will not only add an extra 60 minutes to their weekend, but also shift daylight back into the morning hours, making it a little less painful to wake up for school and work during the shorter winter days....