President Richard Nixon signed the US Endangered Species Act into law.
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Scarlett Johansson made her debut on Broadway.
Vladimir Putin signed a law banning the US adoption of Russian children.
The first major rock festival held on America's east coast took place.
NASA's James Webb Space Telescope began the multi-day process of unfurling its sunshield.
Hong Kong began to slaughter the city's 1.6 million chickens to stop the spread of an influenza strain.
