On this day in history - Today, April, 3

Today in History

• 1885 Gottlieb Daimler patents his engine design

  The German engineer's so-called “grandfather clock engine” was lighter than previous four-stroke eng

• 1940 Soviet troops massacre about 22,000 Polish nationals

  The Katyn massacre is considered the worst massacre of prisoners of war in history. The order to exe

• 1948 Harry S. Truman signs the Marshall Plan

  $12.4 billion was allocated to help rebuild European economies after the end of World War II and pre

• 1973 The first public mobile telephone call is placed on a Manhattan sidewalk

  Motorola's Martin Cooper called Joel Engel of Bell Labs. He later told the BBC that his first words

• 1996 The Unabomber, Ted Kaczynski, is arrested

  The mathematician who was driven by anarchist ideas sent out 16 letter bombs between 1978 and 1995,