"The Sky is Going to Fall", in Seriatim: The Journal of Ecotopia, No. 2, Spring 1977, pp. 88 – 89. (slightly different article appeared in The San Francisco Examiner "Overview" column, July 4, 1976.)
"The Sky is Going to Fall", în Seriatim: The Journal of Ecotopia, No. 2, primăvara 1977, pp. 88-89 (un articol puțin diferit a apărut în The San Francisco Examiner coloana "Overview", 4 iulie 1976.)