This document provides information about careers in the agricultural sciences, the biological sciences, chemistry, forestry and conservation, geology and geophysics, meteorology, and physics. The information, presented in separate sections for each of these disciplines, includes: (1) nature of the work performed by scientists in the discipline(s); (2) working conditions; (3) employment; (4) training, other qualifications, and advancement opportunities; (5) job outlook; (6) earnings; (7) related occupations; and (8) sources of additional information. (JN)