Plunket Clark (1896 - 1973)

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1896 - In the year that Plunket Clark was born, in April, the first study on global warming due to CO2 - carbon dioxide - in the atmosphere was published by Swedish scientist Svante Arrhenius. Arrhenius concluded that human activity due to the Industrial Revolution would amplify CO2 in the atmosphere, causing a greenhouse effect. His conclusions have been extensively tested in the ensuing 100+ years and are still seen to hold true.

1897 - By the time this person was just 1 year old, on March 4th, William McKinley became the 25th President of the United States. He had beaten William Jennings Bryan in the 1896 election by 51% to 46.7% in the popular vote. Six months into his second term as President, McKinley was assassinated.

1913 - Plunket was 17 years old when Henry Ford installed the first moving assembly line for the mass production of an entire automobile. It had previously taken 12 hours to assemble a whole vehicle - now it took only two hours and 30 minutes! Inspired by the production lines at flour mills, breweries, canneries and industrial bakeries, along with the disassembly of animal carcasses in Chicago’s meat-packing plants, Ford created moving belts for parts and the assembly line was born.

1914 - When this person was 18 years old, in August, the world's first red and green traffic lights were installed at the corner of East 105th Street and Euclid Avenue in Cleveland Ohio. The electric traffic light had been invented by a policeman in Salt Lake City Utah in 1912.

1973 - In the year of Plunket Clark's passing, in October, Vice President Spiro Agnew resigned - President Nixon nominated Gerald Ford for Vice President. Nixon's tax returns came under investigation. Nixon offered the recently discovered Oval Office tapes be heard by one person and summarized - his offer was rejected by the Special Prosecutor. Nixon ordered the Attorney General, then the assistant Attorney General, to fire the Special Prosecutor. Both refused and were fired. The Solicitor General became the acting Attorney General and fired the Special Prosecutor (the Saturday Night Massacre). Nixon releases some of the tapes, under extreme pressure because of the firings.

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