January 31, 1930
3M begins marketing Scotch Tape.
Scotch Tape is a brand name used for certain pressure sensitive tapes manufactured by 3M as part of the company's Scotch brand. The precursor to the current tapes was developed in the 1930s in Minneapolis, Minnesota by Richard Drew to seal a then-new transparent material known as cellophane.
February 18, 1930
While studying photographs taken in January, Clyde Tombaugh discovers Pluto.
Pluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System (after Eris) and the tenth-most-massive body observed directly orbiting the Sun. Originally classified as the ninth planet from the Sun, Pluto was recategorized as a dwarf planet and plutoid due to the discovery that it is one of several large bodies within the newly charted Kuiper belt.
May 28, 1930
The Chrysler Building in New York City officially opens.
The Chrysler Building is an Art Deco style skyscraper in New York City, located on the east side of Manhattan in the Turtle Bay area at the intersection of 42nd Street and Lexington Avenue. At 1,046 feet (319 m), the structure was the world's tallest building for 11 months before it was surpassed by the Empire State Building in 1931. After the destruction of the World Trade Center, it was again the second-tallest building in New York City until December 2007, when the spire was raised on the 1,200 foot (365.8 m) Bank of America Tower, pushing the Chrysler Building into third position. In addition, The New York Times Building, which opened in 2007, is exactly level with the Chrysler Building in height. Both buildings were then pushed into 4th position, when the under construction One World Trade Center surpassed their height.
Deaths
March 2, 1930
David Herbert Richards Lawrence was an English novelist, poet, playwright, essayist, literary critic and painter who published as D. H. Lawrence. His collected works represent an extended reflection upon the dehumanising effects of modernity and industrialisation. In them, Lawrence confronts issues relating to emotional health and vitality, spontaneity, and instinct.

July 7, 1930
Sir Arthur Ignatius Conan Doyle was a Scottish physician and writer, most noted for his stories about the detective Sherlock Holmes, generally considered a milestone in the field of crime fiction, and for the adventures of Professor Challenger. He was a prolific writer whose other works include science fiction stories, plays, romances, poetry, non-fiction and historical novels.