The universe may be vast, but researchers have multiple points of evidence that reveal its shape.
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.
Sometimes dark or milk chocolate gets a white sheen or blotchy white spots on it. What is happening, and is chocolate that has turned white safe to eat?
As global temperatures rise, the ecology of Antarctica is already changing, but Earth's climate would have to change drastically before the continent could support agriculture and permanent settlers.
The biggest blasts come from above, while volcanic eruptions and human-caused detonations have also unleashed incredible levels of energy.
Race and ethnicity are terms that are sometimes used sloppily, almost interchangeably. But race and ethnicity are not the same thing.
Birds have sex via an internal chamber called a cloaca that is present on both male and female animals.
It can be a freeing feeling to shuck off your shoes and walk outside barefoot...until you get a splinter.
If Earth had no atmosphere, the moon would be visible all the time. So why is it only sometimes visible in daylight?
Many fairytales have an evil stepmother who is determined to ruin the lives of her stepchildren. But what are the roots of this age-old trope?
Do astronomers know which star is the oldest and which is the youngest in the universe? How can they tell?
Reference The Republicans used to favor big government, while Democrats were committed to curbing federal power. So why did the party switch occur?
Flat-earthers believe one of the most curious conspiracy theories on the internet. Here's a look at what they believe and why.
"Dunbar's number" implies that our relationship threshold is limited to 150 people. But is this true?