The 70's. By kaatelaurel Apr 22, 1970 First Earth Day May 4, 1970 Kent State Shooting May 31, 1970 Earthquake in Peru 72,000 people killed. 700,000 left homless. Nov 14, 1970 Marshall University plane crash no survivors. Dec 21, 1970 First F-14 Tomcat Tested led to Navy use. Jun 30, 1971 Voting Age Lowered To 18 Oct 1, 1971 Opening of the Magic Kingdom in Florida Apr 4, 1973 Tower Number Two of The World Trade Center opens Apr 3, 1974 Super Tornado Outbreak Super Tornado Outbreak 148 tornados. 330 dead, 5,000 injured. Mar 13, 1975 Alaska Pipeline Construction Begins Jan 18, 1977 Legoinnaire's Disease Source Identified Sep 21, 1977 Nuclear-Proliferation Pact Signed Nov 3, 1978 The Greensboro Massacre Sep 7, 1979 ESPN starts broadcasting Dec 3, 1979 The Who Concert Tragedy
