Far-flung spacecraft are helping us learn about the solar system's edge.
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.
Particle accelerators can help scientists measure the smallest and largest particles in the universe.
Humans are slow and weak compared with bears, pumas and other large predators, but these beasts usually avoid us. Why don't these animals try to eat us more often?
Atoms are the building blocks of all matter in the universe, but how many are there in the part of it we can see from Earth?
New evidence shows that watermelons were first domesticated in Sudan, leading experts to think the region rivals Iraq as a cradle of agriculture.
While often strained, the U.K.-U.S. relationship got a boost when Roosevelt and Churchill became drinking buddies.
Some animals lead quiet lives, while others prefer constant chatter. Why do some animals vocalize more than others, and what are they saying?
Our planet is constantly moving, racing around the sun and spinning on its axis. But how fast does it move?