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Arts & culture
Why did medieval readers kiss, smudge and deface their books?
“What they were really touching was each other,” says French Professor Henry Ravenhall. “The book was just a conduit for whatever kind of social desire was needed to be expressed within that group.”
Research
Research
Not one, but two massive black holes are eating away at this galaxy
UC Berkeley astronomers found a stealth black hole that is a companion to the massive black hole in the galaxy’s core. One day, the two might merge and produce a ripple of gravitational waves.
Politics & society