Johnstown, Pennsylvania, USA, kills 112 miners. August 10, 1903 – Paris Métro train fire. December 30, 1903 – A fire at the Iroquois Theater in Chicago, USA kills 600. February 7, 1904 – The Great Baltimore Fire in Baltimore, USA destroys over 1,500 buildings in 30 hours. June 15, 1904 – A fire aboard the steamboat General Slocum in New York City's East River kills 1,021. June 28, 1904 – The Danish ocean liner runs aground and sinks close to Rockall, killing 635, including 225 Norwegian emigrants. January 22, 1906 – The strikes a reef off Vancouver Island, Canada, killing over 100 (officially 136) in the ensuing disaster. Assassinations and attempts Prominent assassinations, targeted killings, and assassination attempts include: July 29, 1900 – King Umberto I of Italy is assassinated by Italian-born anarchist Gaetano Bresci. March 6, 1901 – In Bremen, an assassin attempts to kill Wilhelm II of Germany. September 6, 1901 – American anarchist Leon Czolgosz shoots U.S. President William McKinley at the Pan-American Exposition in Buffalo, New York. McKinley dies 8 days later. June 16, 1904 – Eugen Schauman assassinates Nikolai Bobrikov, Governor-General of Finland. February 1, 1908 – Carlos I of Portugal is assassinated in Lisbon, Portugal. October 26, 1909 – Itō Hirobumi, four time Prime Minister of Japan (the 1st, 5th, 7th and 10th) and Resident-General of Korea, is assassinated by Ahn Jung-geun at the Harbin train station in Manchuria. Economics The cost of an American postage stamp was worth 1 cent. Science and technology Science March 17, 1905 – Annus Mirabilis papers – Albert Einstein publishes his paper "On a heuristic viewpoint concerning the production and transformation of light", in which he explains the photoelectric effect, using the notion of light quanta. For this paper Einstein received the Nobel Prize for Physics in 1921. May 11, 1905 – Annus Mirabilis papers – Albert Einstein submits his doctoral dissertation "On the Motion of Small Particles...", in which he explains Brownian motion. June 30, 1905 – Annus Mirabilis papers – Albert Einstein publishes the article "On the Electrodynamics of Moving Bodies", where he reveals his theory of special relativity. September 27, 1905 – Annus Mirabilis papers – Albert Einstein submits his paper "Does the Inertia of a Body Depend Upon Its Energy Content?", in which he develops an argument for the famous equation E = mc2. Planck's law of black-body radiation Seismographs built in the University