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Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution. -
Henry David Thoreau published Walden -
The term ecology is coined in German as Oenology by Ernst Heinrich Philipp August Haeckel -
The term acid rain is coined by Robert Angus Smith in the book Air and Rain. -
The term smog is coined by Henry Antoine Des Voeux in a London meeting to express concern over air pollution. -
US Congress created the National park service -
Rachel Carson published Silent Spring -
The assassination of former president John F. Kennedy, which was named by 21% of respondents, was another defining moment for baby boomers, who listed the event significantly more often than respondents form older generations. -
The Vietnam War was a defining event for a baby Boomers in particular, who overwhelmingly listed it as a top 10 moment, 20% of Americans overall listed the conflict. -
A third of baby Boomers and 29% of Silent Generation respondents listed it. -
The Pew research center noted that income and education levels plays a role in respondents' perception of the tech revolution's importance. -
The 1989 event that marked the end of the Cold War was listed by 13% of respondents. -
The War was of particular importance to Generation X respondents, who were the only generational group to list the event. -
More than any other events, Americans of all generations, races, genders, and political affiliations agreed that he terror attacks on sept. 11,2001 were integral in shaping their lives and the country's history. -
Obama's 2008 election victory was the second-most commonly named events, appearing on 40% of respondents lists. -
Overall, 17% of Americans named the wars as one of the 10 most significant events in their lifetimes. -
The Pew Research center notes that the attack, which took place at Orlando's pulse nightclub on"latin Night," disproportionately targeted Latinos, who made up 90% of those killed.