Why do songs get stuck in our heads?

Science
“You can be cool and you can be smart” Kelly Mathews is on a mission. She wants to get more girls interested in STEM, which is the acronym for science, technology, engineering, and math. For Mathews, it's a mission that begins at home with her 9-month old daughter, Marilyn. "I want her to look at things and wonde... - Posted on November 20, 2014
Spacecraft lands on comet 4 billion miles away Hundreds of millions of miles from Earth, a spacecraft made history Wednesday. It landed on the icy, dusty surface of a speeding comet. It was an audacious cosmic first designed to answer big questions about the origin of the universe. Paolo Ferri, head of mission operations... - Posted on November 13, 2014
Fifth grader finds 14,000-year-old arrowhead Noah Cordle and his family were vacationing on Long Beach Island in New Jersey last summer. That's when a discovery cut his boogie boarding session short. Something pointy brushed against his leg. "It didn't feel like any of the other shells," he says. He reached into... - Posted on November 7, 2014
Robot spies on shy penguins The newest tool for biologists is the baby penguin robotic spy. It's pretty darn cute. And it is so convincing that penguins essentially talk to it, as if it is a potential mate for their young chicks. Emperor penguins are notoriously shy. When researchers approach, t... - Posted on November 6, 2014
Goofy dinosaur blends Barney and Jar Jar Binks Nearly 50 years ago, scientists found bones of two large, powerful dinosaur arms in Mongolia and figured they had discovered a fearsome critter with killer claws. Now scientists have found the rest of the dinosaur and have new descriptions for it. They call it goofy and wei... - Posted on October 26, 2014
Can you draw better than a 40,000 year old? Ancient cave drawings in Indonesia are as old as famous prehistoric art in Europe. Our ancestors were drawing all over the world 40,000 years ago, according to a study. And it hints at an even earlier dawn of creativity in modern humans than scientists had thought. Ar... - Posted on October 13, 2014
How do dolphins sleep without drowning? Dolphins aren't like fish, which can breathe underwater. They're mammals and they have to get to the surface to breathe air periodically. And a lot of them – like everyone's favorite, the bottlenosed dolphin – can only hold their breath for seven minutes or so.... - Posted on October 2, 2014
Colossal squid is as long as a minibus! It was a calm morning in Antarctica's remote Ross Sea, during the season when the sun never sets, when Capt. John Bennett and his crew hauled up a creature with tentacles like fire hoses and eyes like dinner plates from a mile below the surface. A colossal squid: 770 pounds,... - Posted on September 19, 2014
Why do bugs die on their backs? Well, they don't all die that way. But many succumb to the laws of physics in their final moments. It's at that point that normal blood flow stops, the legs contract, and the bug gets top heavy. Inevitably, it falls over onto its back. Of course, a stiff breeze or a curious... - Posted on September 18, 2014
Why do songs get stuck in our heads? Ah, yes, the evil ear worm, which sometimes has our hearing seemingly sticking on the same song, over and over. Polls show that a stunning 90% of us have experienced these hearing parasites and nine out of 10 report having them at least weekly. Who remembers these classic ... - Posted on September 16, 2014