Quantum sensor could measure how Earth drags spacetime

Einstein's theory of general relativity describes gravity as the bending of spacetime, a mathematical model that combines three-dimensional space and time into a single, four-dimensional continuum. The theory also predicts ...

Your dog may link sounds with shapes, just like you do

Sounds have shapes. That might sound strange since sound waves are invisible, but a famous psychological experiment in the 1920s showed that our brains naturally link spoken sounds to visual forms. According to new research ...

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