Hindenburg before last Flight
Hindenburg dirigible exploded in 1937 at 7:20 PM. Thirty-six of the 97 passengers and crew died. It was approaching its mooring mast at Lakehurst, New Jersey. Children could learn how modern-day airships work at: Airships.
Roger Bannister
Roger Bannister was the first person to run a mile in less than four minutes in 1954. In Oxford, England, about 3,000 spectators watched the young doctor complete the mile run in 3 minutes 59.4 seconds. His record lasted only 46 days when John Landy ran the mile in 3 minutes 58 seconds.
The Channel Tunnel, also called the Chunnel, connecting the United Kingdom and France, opened in 1994. It is 31 miles long, 23 of those miles under water. Digging beneath the English Channel began in 1988. Today about 18 million people travel on trains through the Chunnel each year. Children could learn more at a very interesting site: http://www.eurotunnel.com/build/.