Ever been in an empty house and felt like someone's watching you? For some, that sensation, that fear of ghosts, is never-ending.
Life's Little Mysteries answers fascinating questions about the world around you and the stuff in it, including wild questions you didn't even know you had.
And check out our "Life's Little Mysteries" podcast, where we answer questions about mysteries big and small — about ancient civilizations; our planet and solar system; the plants and animals that live alongside us; our bodies and how they work; and more. Listen in on Apple podcasts, Spotify and Audioboom.
Head-bobbing might make pigeons look ridiculous, but there's a practical purpose behind this very strange display.
Imagine a world where mountains grow so high, they poke through the upper atmosphere and create a rocky maze for pilots to navigate.
Several countries are launching claims to vast swathes of the Arctic seabed. But what does that mean for political and environmental stability in the region?
A complex network of skull bones, ligaments and muscles allows a snake to swallow prey with bodies much larger than the sinuous predator's own head.
How many people could fit on the moon? Answering that may require asking other questions — about lunar survival.
Parents' fears about vaccine safety may prompt them to eliminate or delay vaccinations, but doing this can jeopardize an infant's health.
Whether your baby has a thick mop of hair or just a few strands, most of it will fall out before she's six months old.
If you could journey through the cosmos' most monstrous objects, what tales — if any — would you be able to tell?
Despite the fact that humans landed on the moon many times during the Apollo missions half a century ago, doing so remains a tough business.
Scary portrayals of great whites in pop culture might lead some people to wonder if the world would be better off with no sharks at all.
The Saffir-Simpson hurricane only goes up to Category 5. But in theory, winds from a powerful hurricane could blow the scale out of the water, scientists say.