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Now celebrating its fifteenth year, The Best Illusion of the Year is a fun contest hosted by the Neural Correlate Society in collaboration with the Museum of Mind. The competition encourages scientists and artists to showcase their ingenuity and creativity by submitting their best illusion through a short video. Here are this year's top 3 illusions selected by fans from the top 10 finalists in an online vote on December 13, 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....

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....

While dogs openly demonstrate joy or displeasure through grins and grimaces, discerning a cat's emotions from its face is often hard, even for its owners. Now, researchers from Canada's University of Guelph assert that stoic as they may appear, cats also express emotions on their faces — one just has to learn how to interpret them!...

Every holiday season, Canada's WestJet airlines finds a unique way to bring Christmas cheer to hundreds of unsuspecting families. Past "miracles" have included surprising weary travelers with iPods, fulfilling extravagant Christmas wishes from passengers aboard two late-night flights, and reuniting loved ones living in different countries for the holidays. In 2019, the company decided to let customers determine if they wanted to keep the generous gift being offered to them or donate it to a family in need....

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....

A perfectly-preserved copy of Marvel's first-ever comic book was sold to an anonymous buyer for a record $1.26 million by Dallas-based Heritage Auctions on November 21, 2019. Published in 1939 by Timely Comics, which later became Marvel Comics, it features an android superhero called The Human Torch, a costumed detective known as Angel, and a mutant anti-hero dubbed Namor the Sub-Mariner....

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....

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!...

On Monday, November 11, 2019, stargazers will be treated to an unusual sight: our solar system's smallest planet, Mercury, passing between the Earth and the Sun. The rare event, called a transit, will be the fourth of just 14 transits of Mercury that will occur during the 21st century. The last one took place on May 8, 2016, and the next will not occur until November 13, 2032. However, it will not be visible from North America, which means the continent's residents will have to wait until May 7, 2049, to observe the celestial delight again....

Cinder-Block, an overweight cat, has become an internet sensation thanks to a workout video posted on social media by the Northshore Veterinary Hospital in Bellingham, Washington. The brief footage, published on October 19, 2019, shows the gray feline reluctantly exercising with one foot on an underwater treadmill while protesting loudly....

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....

Halloween dog parades, where pooches get to strut around in fun costumes, are a fairly common occurrence during this time of the year. However, very few compare to New York City's Tompkins Square Halloween Dog Parade, the largest and most popular gathering of its kind. The annual event attracts over 300 pooches and their proud owners, who often dress in coordinated outfits to help their furry, four-legged friends win the coveted Best in Show title....

The Smithsonian's National Zoo in Washington, DC, is home to 2,700 animals representing more than 390 species. However, few are as beloved as giant panda cub Bei Bei, whose progress, from a frail newborn weighing less than a third of a pound to a healthy, 240-pound (109-kg) "toddler," has been eagerly followed by millions of fans both online and on-site. On November 19, 2019, America will bid farewell as its favorite panda cub departs for Chengdu, China, to join a cooperative breeding program to try to save his vulnerable species, which currently numbers just 1,864 specimens in the wild....

Ever since humans began venturing into space, 227 astronauts have left the spacecraft to perform some sort of extravehicular activity (EVA). While 14 of those have been women, the female astronauts have always been accompanied by a male counterpart. On October 18, 2019, US astronauts Christina Koch and Jessica Meir became the first all-female team to conduct a spacewalk to replace a failed battery controller....

Though not as mainstream as devices like smartphones and fitness trackers, more companies are now experimenting with the concept of connected garments. Among the pioneers is London-based CuteCircuit, which has been creating fashionable smart clothing since 2004. The company's latest innovation is the "Sound Shirt," which allows deaf people to "feel" live music by transforming the tunes into touch sensations in real time....

Though they may not take center stage the rest of the year, pumpkins are the squashy stars of October. Some make an appearance inside popular treats like lattes, cookies, and pies, while others are carved into spooky Halloween jack-o'-lanterns. Then there are the select few whose only purpose is to win pumpkin weigh-off contests. Though numerous such events are held across the US, the "Super Bowl of Weigh-Offs” takes place annually at Half Moon Bay, CA, which prides itself as the “World Pumpkin Capital.”...

An Australian dog is still recovering from a hilarious case of mistaken identity. On October 6, 2019, Tony was out in his yard in Adelaide, South Australia, with his owner Henry when a baby koala leaped onto his back. The bewildered pooch squirmed around to nudge the adorable joey, which was clinging to its fur, off his body. Every time he thought he had succeeded, the smart koala found a way to clamber back on....

Celebrated annually on the second Monday in October, Columbus Day honors Italian explorer Christopher Columbus's discovery of America. However, the federal holiday, which will be observed on October 14, 2019, has long drawn criticism due to the European settlers' brutal treatment of the Native American people. It has also been argued that America had already been "discovered" by the indigenous people when Columbus arrived....

On October 5, 2019, astronomers and space fans worldwide will celebrate the 10th International Observe the Moon Night. The annual event was started by NASA in 2009 to "celebrate lunar science and exploration, celestial observation, and our cultural and personal connections to the Moon."...

Octopuses in the wild have often been observed changing their skin color and texture to avoid predators or to catch unsuspecting prey. Now, for the first time, a researcher has captured a spell-binding video of a cephalopod called Heidi rapidly changing into a multitude of colors while sleeping....

The Masai Mara Reserve is one of Kenya's most popular tourist attractions. Every year, thousands of people flock to the national park to glimpse of a variety of wild animals, such as lions and cheetahs, or to witness the majestic annual migration of over 1.5 million wildebeests to and from neighboring Tanzania. However, this September's human "stampede" is due to an unexpected animal — a zebra foal with polka dots!...