The Magnetic Monster
A scientist (Richard Carlson) and his assistant (King Donovan) give an energy-eating isotope a taste of 900,000,000 volts. They calculate that if the substance is not destroyed soon that within 24 hours or so it will have grown large enough to throw Earth out of its orbit.
27 August 1899, Ogden, Utah, USA
27 September 1898, Albany, New York, USA
22 October 1908, Chicago, Illinois, USA
26 January 1904, Madison, Virginia, USA
10 December 1925, Paducah, Kentucky, USA
10 April 1879, Wheeling, West Virginia, USA
27 March 1908, London, England, UK
14 May 1923, Kansas City, Missouri, USA
25 January 1918, New York City, New York, USA
11 April 1883, Cheetham, Manchester, Lancashire, England, UK
27 September 1915, New York City, New York, USA
23 January 1909, Pasadena, California, USA
March 24, 2012
Menacing SF pic about the dangers of nuclear energy in experiments that take a wrong turn.

