Transgender people were no longer allowed to use public toilets after Obama’s rule was rebuked by Donald Trump.
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A 3,500-year-old Ancient Egyptian obelisk called 'Cleopatra's Needle' was erected in Central Park, New York, US.
The first cloned animal from an adult animal cell was announced.
Robert Stewart ascended to the Scottish throne, marking the beginning of the House of Stewart.
NASA's Spitzer Space Telescope discovered a star with seven Earth-sized planets orbiting it.
Planes were banned from passing over the White House.
