President George H. W. Bush's Press Conference at Rio de Janeiro Heads of State Earth Summit Part 23

Amazonia

Part 4

CBS "60 Minutes" Re: Bcci - Clark Clifford

Part 24

Pupil's Response

Part 2

CBS Nightwatch Discussion of Toxic Waste Disposal

Part 12

News Segment 3

Part 5

Greenhouse Gases Threaten Public Health and the Environment

Part 4

Press Conference on Smoking

Part 6

Herrah Women and the Work Environment

Part 1