Male lemurs mix their scented secretions to send long-lasting messages to one another.
When a shy fish ventures into the unknown, it prefers to follow a fish with a similarly cautious personality.
The same technological advances that shrank telephones miniaturized heart monitors, with far-reaching implications for heart health.
If seeing the one you love makes your heart skip a beat, should you see a cardiologist?
All it takes is a magnet and knowing where to look.
New measurements of Tamu Massif, the world's largest volcano, indicate that it had a very complicated genesis.
When Flint, Mich., switched its water supply, a chemical cascade inside old pipes caused lead to leach into the city's drinking water, triggering a public health emergency.
Plug a shark’s nose, and it’ll have a hard time getting home.
In this episode of Richard Garriott's miniseries, he shows us how Earth formed, how remnants of that formation still wander the solar system and how our planet came to be covered by oceans.Next week: Life on Earth Begins
Unexpected things prime our brains to work a little harder.
Thirteen times a century, on average, Mercury passes directly between Earth and the sun, creating what astronomers call a transit. It just happened again; this video, created with images from the orbiting Solar Dynamics Observatory shows the tiny planet’s silhouette as it makes its seven-hour journey across the solar disk.
Why would a biochemist make three-dimensional prints of budding yeast cells?
More comprehensive scanning shows that even “minor” hits could be as damaging to players’ brains as concussions.
New research on mice demonstrates a way to use designer bacteria as a non-invasive test for cancer.
The elephant in the room—actually, Times Square: a ton of poached ivory that was mashed in some sort of souped-up wood chipper.
A new atlas of light pollution shows that most people never see a truly dark sky at night. You can read more about it here.
There is a facial expression that needs no translation.
Human-caused ocean noises cause clams to clam up and lobsters to scurry for cover, which could wreak havoc with nutrient cycling.
Globe skimmer dragonflies migrate more than 15,000 kilometers, breeding with the locals as they travel and creating an interrelated global population. A dragonfly from Japan may have more in common with Guyanese dragonflies, genetically speaking, than its own Japanese cousins.
Ian Agol is a University of California mathematician who was awarded the 2016 Breakthrough Prize for his work on 3-D topology. He shares a special joke about how topologists view breakfast.Editor's Note (6/3/16): In honor of National Doughnut Day, Scientific American has updated and republished the following video, originally published in November 2015.