In this study, Spanish and US secondary science teacher data is used to address the relationship between what science teachers teach and the science and technology based environmental problems/threats faced by the world. The results of a two part questionnaire indicated that teachers of both countries are worried about the problem of pollution of the planet. The US teachers showed greater sensitivity to the problems related to sustainable development and the limited resources of the planet. The Spanish were more concerned about problems regarding unjust distribution of the natural resources and possible ways to equitably distribute them. However, the majority of both teacher groups recognized that they do not dedicate much time to the treatment of these subjects in class. (Contains 9 tables.) [This article has been published by Gokkusagi Ltd.]