There have been four fundamental changes in information technology since humans learned to speak. The first took place around 4000 BC, the fourth took place in 1974, 1981 or 1998. But there's continuity still.
We've seen particles that are massless only when moving one direction
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Inside a hunk of a material called a semimetal, scientists have uncovered
signatures of bizarre particles that sometimes move like they have no mass,
but a...
3 hours ago
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