Here’s a look at some interesting events that took place on this day in history:

30 BC – Cleopatra commits suicide (More info)

1963 – The "hotline" between the leaders of the US and the Soviet Union goes into operation (More info)

1965 – New York Mets manager Casey Stengel announces his retirement, ending his 56-year career in professional baseball (More info)

1967 – Thurgood Marshall is confirmed as the first African-American Justice of the US Supreme Court (More info)

2006 – The California State Senate passes the Global Warming Solutions Act, making it the first state in the US to place caps on carbon dioxide and other greenhouse gases (More info)

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