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Prime numbers’ unique quality — being divisible only by themselves and one — makes them useful for encrypting secret information.
This word describes both a stage of sexual reproduction and the agricultural practice of adding nutrients to soil.
Through wires implanted in a person’s brain, this medical treatment can help treat various conditions.
Researchers rely on prehistoric tools and other artifacts to study the vast stretches of time before recorded history.
Lightning bolts, nuclear explosions, colliding stars and black holes all throw off this high-energy type of light.
Animals with spines, or vertebrates, come in all shapes and sizes.
This word describes sound waves that have frequencies too high for human ears to hear.
This rigid polymer transports water and gives trees their strength.
When a liquid is supercooled, it has been chilled below its freezing point without freezing.
These numbers may not be “real,” but they sure aren’t make-believe.
Rare earth elements aren’t all that rare — but skyrocketing demand for these metals makes them precious.
These task-doers handle jobs as simple as vacuuming the floor and as complex as navigating extraterrestrial terrains.