Today is Wednesday, April 10, the 100th day of 2013. There are 265 days left in the year.
837 ― Comet 1P/837 F1 (Halley) approaches within 0.0334 astronomical units (AUs) of Earth
1516 ― First ghetto, Jews are compelled to live in specific area of Venice
1868 ― First performance of John Brahms' “Ein German Requiem”
1872 ― Arbor day first celebrated in Nebraska, later changed to April 22
1912 ― RMS Titanic sets sail for its first & last voyage
1923 ― Hitler demands “hatred and more hatred" in Berlin
1925 ― F. Scott Fitzgerald publishes “The Great Gatsby”
1930 ― Synthetic rubber first produced
1972 ― U.S., USSR and 70 other nations agree to ban biological weapons
1981 ― Computer glitch keeps Space Shuttle Columbia grounded