In 1980, the American professor Thomas A. Sebeok received a call that took him by surprise. He was to participate in a crisis team of the Bechtel corporation. This assembly of renowned scientists was concerned with the question of what should be done with the now accumulated quantities of radioactive waste from military and civilian use. One task was to develop notification systems that would still be able to warn of the dangers of radioactive substances 10,000 years from now.
Release Date: January 01, 1997
February 04, 1993
November 28, 2018
June 21, 2023
November 23, 2020
April 19, 2013
December 04, 2017
January 21, 2018
September 03, 2015
January 01, 1984
November 25, 2022
March 17, 1989
May 15, 1984
January 15, 1988
January 01, 1995
August 03, 2017
October 15, 1989
February 14, 1989
February 20, 1992
December 04, 1989
September 19, 2017