9 Shortz Era entries found. Click any date for context.
|Sunday, August 14, 2016||4D||Uranium 238 and strontium 90||Ian Livengood|
|Wednesday, May 11, 2016||36D||Deuterium and tritium||Pawel Fludzinski|
|Monday, November 28, 2011||5D||Springfield's minor-league team on "The Simpsons"||Andrea Carla Michaels|
|Friday, June 3, 2011||63A||Chemist's relatives?||Jeffrey Wechsler|
|Wednesday, May 5, 2010||58A||Carbon 14 and uranium 235||Dan Schoenholz|
|Tuesday, March 1, 2005||55A||Deuterium and tritium, to hydrogen||Gilbert H. Ludwig|
|Monday, July 10, 2000||10D||Some are radioactive||Gene Newman|
|Tuesday, June 4, 1996||37D||Atoms with the same number of protons||E. Early|
|Monday, September 25, 1995||43D||Carbon 14 and others||Gregory E. Paul|
1 result for ISOTOPES from Variety puzzles.
|July 27, 2014||acrostic||U||Relatives of a fundamental sort||Emily Cox and Henry Rathvon|
5 results for ISOTOPES from older pre-Shortz puzzles.
|Friday, December 15, 1989||40D||Protium and tritium, e.g.||Jim Page||Maleska|
|Thursday, December 13, 1973||4D||U 235 et al.||Unknown||Weng|
|Friday, April 3, 1953||41D||Elements having the same atomic number.||Roberta Morse||Farrar|
|Monday, January 19, 1953||20A||Basis of most chemical elements.||George Henderson||Farrar|
|Sunday, August 27, 1950||42D||Forms of elements having same atomic number.||Harold T. Bers||Farrar|