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!...

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....

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....

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....

Time Inc.'s "Person of the Year" tradition began in 1927, when the magazine commemorated 25-year-old aviator Charles Lindbergh for the first nonstop solo flight across the Atlantic Ocean. Though the media franchise has since recognized several young people for their global influence, it has never given the important distinction to a teenager. But then again, few teens are as passionate about their mission as 2019's "Person of The Year"— 16-year-old Swedish climate change activist Greta Thunberg....

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....

While America's highest office — the presidency — remains elusive to women, Finland has just elected its third female premier. Even more impressive, 34-year-old Sanna Marin, who was sworn into office on December 10, 2019, is the youngest prime minister in Finland's history, and the world's youngest sitting government head. Prior to this, that honor belonged to New Zealand's Jacinda Ardern, who was 37 years old when she took office in October 2017....

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!...

To say that space is tight in the Principality of Monaco is an understatement. The pint-sized country, which has a surface area of just 0.78 square miles (2.02 square kilometers), boasts a total population density of 48,466 people per square mile — the highest in the world. With building space stretched to the limit, architects in the world's second-smallest country have been constructing up towards the sky, tunneling down into the ground, and even carving out the surrounding cliffs. Now, they have built a multi-million dollar luxury home inside a rock....

Though it has been over a century since the R.M.S. Titanic sank after hitting an iceberg, modern-day ships remain as vulnerable to such catastrophes. The most recent disaster occurred in May 2019, when a sightseeing boat on the Danube River in Hungary capsized and sank after colliding with a river cruise ship, killing 28 of the 35 tourists aboard. Now, researchers from New York's University of Rochester may have found a way to avert such tragedies, with a water-repellant metal that can stay afloat even after having several holes drilled in it....

Celebrated annually on the Tuesday after Thanksgiving and the popular shopping events Black Friday and Cyber Monday, #GivingTuesday is designed to kick off the season of generosity. Now in its eighth year, the charitable event uses the power of social media to encourage organizations and individuals to donate funds or resources towards worthy causes. Established in 2012 by New York City nonprofit 92nd Street Y, #GivingTuesday is now observed worldwide, with millions of people coming together each year to bring positive change to their communities....

Not a fan of the increasingly shorter winter days? Then you may want to avoid the town of Utqiagvik, Alaska. That's because the northernmost city in the US just experienced its last sunset of the year on November 19, 2019. Even worse, it will not witness a sunrise again until January 23, 2020. More precisely, that means 65 consecutive days, or 1,560 hours, of no daylight....

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!...

Two years ago, aerospace manufacturer SpaceX stunned the world by landing its reusable booster engine — the biggest and most costly part of the rocket used to power spacecrafts into low orbit — on an autonomous drone ship in the Atlantic Ocean. Now, California-based startup Rocket Lab, has come up with an even bolder idea: using parachutes and helicopters to capture the returning booster, or first stage as it is often called, in midair!...

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....

Looking for something spookier than your neighborhood haunted house this Halloween? Then you may want to take a peek at some of the ghostly space images NASA scientists have been able to capture through various missions, like the Hubble Space Telescope and the Spitzer Space Telescope....

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!...

Humpback whales spend summers feeding in the cold Arctic and Antarctic waters and then migrate to tropical waters during the winters to breed and give birth. Since they don't eat at all during this time, the mammals have to ensure they have enough fat reserves to feed their calves and to sustain themselves. To optimize their prey consumption, humpback whales often create circular "nets" with bubbles exhaled from their blowholes. Now, for the first time, researchers have captured detailed footage of the so-called bubble-net fishing technique from the whale’s point of view along with, an aerial video....