Researchers discovered that as many as 600 million birds die in the US every year after flying into skyscrapers.
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NASA's Discovery space shuttle launched on mission STS-56.
German mathematician Carl Friedrich Gauss became the first person to prove quadratic reciprocity law.
Roman Emperor Caracalla was stabbed to death by a guard while urinating.
The iconic historical Winchester Cathedral in Hampshire, England, was dedicated to Bishop Walkelin.
The first person in the world to be diagnosed with Alzheimer's died.
