In April 1970, the very first "Day" dedicated to environmental protection and recycling was celebrated.
Earth Day
This "unsinkable" luxury ocean liner struck an iceberg on its maiden voyage in April 1912.
Titanic
In April 1961, Yuri Gagarin became the first human to travel into this "final frontier", also known as...
Space
This long-reigning British Queen, born in April 1926, celebrated her "Diamond Jubilee" in 2012.
Queen Elizabeth II
The 1889 World’s Fair in Paris opened in May with the debut of this 1,000-foot iron tower.
Eiffel Tower
In May 1927, this pilot became a hero after completing the first solo nonstop flight across the Atlantic.
Charles Lindbergh
This was the name of the ocean the Titanic was crossing when it met its fate.
Atlantic Ocean
In May 1961, this man became the first American in space aboard the Freedom 7.
Alan Shepard
In May 1937, this King of England was crowned after his brother, Edward VIII, abdicated for love.
King George VI
The 1893 World’s Fair in Chicago introduced this giant rotating wheel that gives riders a view from the sky.
Ferris Wheel
On May 29, 1953, Sir Edmund Hillary and Tenzing Norgay became the first to reach the summit of this world-famous mountain.
Mount Everest
This communication system used by the ship's wireless operators uses dots/dits and dashes/dahs
Morse Code
President John F. Kennedy gave a famous May 1961 speech promising to land a man on this celestial body by the end of the decade.
the Moon
This famous nurse, known as "The Lady with the Lamp," was born in May 1820.
Florence Nightingale
At the 1904 St. Louis World's Fair, this popular summer treat (served in a cone) became a sensation.
Ice Cream
In April 1955, Jonas Salk's vaccine for this virus was declared safe. (HINT: the iron lung was used as a treatment for this virus)
Polio
The Titanic was built in this city, the capital of Northern Ireland.
Belfast
In April 1981, this first reusable spacecraft, named Columbia, launched into orbit.
Space Shuttle
This President, born in May 1917, was the youngest ever elected to the office and famously founded the Peace Corps.
John F. Kennedy
The 1962 World's Fair in this Washington city featured the debut of the "Space Needle."
Seattle
In May 1932, she became the first woman to fly solo across the Atlantic Ocean.
Amelia Earhart
This famous British ocean liner, launched in the 1930s, served as a troopship in WWII and is now a hotel permanently docked in Long Beach, California.
the Queen Mary
This "Great" space telescope was launched in April 1990 to take pictures of distant galaxies.
Hubble Space Telescope
This Russian Empress, who was born in May 1729, expanded the Russian Empire and was one of the longest-ruling female leaders in history.
Catherine the Great
This soft drink, originally sold as a brain tonic, was a hit at the 1904 World's Fair.
Dr Pepper