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1990 Channel Tunnel sections started from the United Kingdom and France meet 40 metres beneath the seabed.
1942 Physicists successfully achieve atomic fission as part of the secret Manhattan Project - Nuclear Power Timeline
1833 Birth of Carlos-Juan-Finlay the man who came up with the theory that yellow fever was spread by mosquitoes, has been celebrated with a Google Doodle.
1945 Canada's first female astronaut in space, Roberta Bondar is born in Sault Ste. Marie, Ontario
1983 Selection of the first six Canadian astronauts Roberta Bondar, Marc Garneau, Steve MacLean, Ken Money, Robert Thirsk and Bjarni Tryggvason
National Day of Remembrance and Action on Violence Against Women
1963 The use of instant replay is used for the first time in 1963 but not until 2008 in baseball.
Jan Ingenhousz discovers photosynthesis
1968 Doug Engelbart introduces the first computer mouse.
1684 Isaac Newton's derivation of Kepler's Law from his theory of gravity is read to the Royal Society by Edmund Halley.
International Human Rights Day
1844 Nitrous oxide is used for the first time in dentistry.
1901 Guglielmo Marconi receives the first radio signal transmitted across the Atlantic Ocean.
1972 Third and final EVA (Extra vehicular activity) of Apollo 17. This is the last manned mission to the moon of the 20th century.
2004 The Millau viaduct , the tallest bridge in the world, near Millau, France is officially opened.
2001 The Leaning Tower of Pisa reopens after 11 years and $27,000,000 to fortify it, without fixing its famous lean.
2009 The science fiction movie Avatar is released internationally by Canadian-born director James Cameron. It would later be the first film to gross $2 billion and the highest grossing movie of all time.
1903 The Wright Brothers make their first powered and heavier-than-air flight in the Wright Flyer at Kitty Hawk, North Carolina.
1966 Saturn's moon Epimetheus is discovered by Richard L. Walker.
1972 Apollo program: The last manned lunar flight, Apollo 17 , crewed by Eugene Cernan, Ron Evans and Harrison Schmitt, returns to Earth.
1951 The EBR-1 in Arco, Idaho becomes the first nuclear power plant to generate electricity. The electricity powered four light bulbs.
First Day of Winter (Winter Solstice) Cross Curricular Activities and Resources
1937 The Lincoln Tunnel in New York opened to traffic.
1947 The transistor is first demonstrated at Bell Laboratories.
1906 The first radio broadcast, by Reginald Fessenden , is transmitted. It consists of a poetry reading, a violin solo, and a speech.
1882 The first string of Christmas Tree Lights , created by Thomas Edison's associate, Edward H. Johnson, is hung on a Christmas Tree.
1982 Time Magazine's Man of the Year is for the first time a non-human, the personal computer.
1978 The Amundsen-Scott South Pole Station in the South Pole recorded temperatures of minus 13.6 °C, making it the highest temperature to ever be recorded in the South Pole.
1895 Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
1959 Physicist Richard Feynman gives a speech entitled "There's Plenty of Room at the Bottom", which is regarded as the birth of nanotechnology .
1924 "Edwin Hubble announces the existence of other galaxies.
1879 Thomas Edison publicly demonstrates the electric incandescent lamp .