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How many melodies are there?

Given there's a finite number of notes on a scale, can we still find a brand new melody? Perhaps they've all been written already!
Collection

Are there limits to information?

With recent advances in information technology it seems that there is no limit to how much smaller and better computer chips can get. But is this really true?
Article

The limits of information

Why there is a limit to how much better computer chips can get and what it's got to do with black holes.
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Black holes: Paradox regained

In 2004 Stephen Hawking famously conceded that black holes do not devour all information when they swallow matter — seemingly resolving the black hole information paradox that had perplexed physicists for decades. But some argue that the paradox remains open and we must abandon our simple picture of spacetime to unravel it.
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Light weight

Does light have weight? Newton thought so. His laws predicted that gravity would bend light, two centuries before Einstein's revolution.