Turns out if you think you can smell that someone's afraid, it might actually be the case. Scientists recently published new research that looks at how animals, and humans, use smell to tell whether they're in danger.
A group of scientists in the Pacific Northwest have been looking into where caffeine accumulates in our national water system. They found it not in areas of high population, but in areas with low population, where septic systems are the primary means of waste disposal.
After sleepwalking into a wall, journalist David Randall was left unsatisfied with his doctor's recommendation to "take it easy." The incident left him determined to uncover the mystery of sleep, a subject he explores in his new book, "Dreamland: Adventures in the Strange Science of Sleep."
Bobak Ferdowsi is young, good looking and sports a stars-and-stripes Mohawk. He's also the flight director for NASA's Mars Curiosity rover. That Ferdowki doesn't look like your typical rocket scientist is what made him an overnight Internet sensation, and the new face of the U.S. space program.
This year's winner of the Google Science Fair is Brittany Wenger, a 17-year-old high school student from Florida. For her award-winning project, Wenger used her knowledge of computer science and biology to design an app to help doctors diagnose breast cancer.
Behind the impressive sky crane-type system that landed the American Curiosity rover on the surface of Mars late Sunday night was an Argentinian man, Miguel San Martin. San Martin first became interested in space listening to NASA's Viking mission to Mars, so his participation this time was quite appropriate.
Late Sunday night or early Monday morning, depending on where you were in the world, NASA landed a technologically advanced rover on the surface of Mars, with a mission to determine whether life ever could have, or maybe does today, exist on the red planet.
An expedition that aimed to find signs that Amelia Earhart's plane crashed off Gardner Island came back empty-handed. But the researchers still believe in their theory.
Sally Ride changed the world for American women, becoming the first woman to go into space. She endured probing and embarrassing questions about what it would be like to be a woman in space. She died Monday at her home in San Diego.
At a zoo in The Netherlands, a two-month old baby sloth was saved from dehydration by the quick action of zookeepers. But their efforts would have been much harder if not for a 2-year-old girl who gave the sloth her teddy bear.