Some sea creatures have arms, others have tentacles and a few have both. So, what's the difference between these appendages?
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.
The speed of light moves 1 million times faster than the speed of sound. What would happen if the speed of sound sped up to match it?
Franklin was being sarcastic. But dig into the story of how the myth arose and it just gets weirder and weirder.
Fetuses show preliminary facial expressions that look like cries starting around 24 to 35 weeks. These facial movements of crying are soundless and too subtle to be felt by the mother.
Historians are still uncertain about what happened to the vanished English colonists at Roanoke, but they have several theories.
Reference Although millions of people celebrate the birth of Jesus Christ on Dec. 25, most scholars agree that he wasn't born on that day, or even in the year 1 A.D.
Scientists recently found that a so-called jumping gene may have jumped ship millions of years ago, and taken our tails with it.
The number of satellites orbiting Earth is skyrocketing, and this may be causing more problems than solutions in the long term.
Here's what would happen to an astronaut's body if they didn't have a spacesuit protecting them in outer space.
Fictional cyborgs have appeared in science fiction since the 1920s, but who was the first human to fuse with technology and become a real-life cyborg?
Humanity shaped the world at the expense of many species, which were driven to extinction through our activities. How would Earth be different if modern humans never existed?
If the flu shot is, on average, between 40% and 60% effective at preventing the flu, why should you get it?