["Breathing freely" in schools--results and model approaches concerning the air quality in classrooms].

Seven schools in Lower Saxony participated in a scientific re-search project measuring the concentration of carbon dioxide (CO2), indoor air temperatures and the relative air humidity in naturally ventilated classrooms on 58 days during the period of one year. The results are as follows: The hygienic reference value of 1500 ppm CO2 (in accordance with the official German regulation DIN 1946-2) was exceeded on 7 days in summer when measurements were taken (32% of all samples in summer) and on 32 days in winter (89% of all samples in winter). The mean CO2-concentration was 1316 ppm, 766 ppm and 1652 ppm in all samples (58 measuring days), summer samples (22 measuring days) and winter samples (36 measuring days), respectively.

[Problem-based learning (POL) in environmental medicine].

"Environmental medicine" is a new sub-discipline in the spectrum of medical specialization in Germany. The Berlin Academy of Occupational Medicine and Health Protection, now a branch of the Berlin Chamber of Physicians, developed a 200-lesson curriculum for physicians who want to specialize in this field. Coincidentally during the initial courses, the attendants were already highly qualified ("Facharzt"-level) and experts in various occupational fields, and hence the composition of the classes was highly heterogeneous on the levels of practical experience as well as theoretical knowledge.

[Sports and motor development in rehabilitation of the disabled in the South of France - report of a study visit (author's transl)].

Within the framework of a study visit conducted to prepare for a German-French student exchange programme, various schools for the disabled as well as medical and vocational rehabilitation facilities had been visited, located in the vicinity of Toulouse and Auch in the South of France. Our interest focussed on programmes for motor development and stimulaton. Although the provision of physical education in not stipulated in the educational curricula, and notwithstanding a rather unfavourable general situation, promising beginnings have been noted.