
Amazon Watershed : the new environmental investigation is a 1991 book by British writer and environmental and political activist, George Monbiot.

The Arctic Environmental Protection Strategy (AEPS) is a multilateral, non-binding agreement among Arctic states on environmental protection in the Arctic. Discussions began in 1989, with the AEPS adopted in June 1991 by Canada, Denmark, Finland, Iceland, Norway, Sweden, the Soviet Union, and the United States. The AEPS deals with monitoring, assessment, protection, emergency preparedness/response, and conservation of the Arctic zone. It has been called a major political accomplishment of the post–Cold War era.

Deadly Deception: General Electric, Nuclear Weapons and Our Environment is a 1991 American short documentary film directed by Debra Chasnoff. It won an Oscar at the 64th Academy Awards in 1992 for Documentary Short Subject. It focuses on General Electric's role in producing nuclear weapons.

The Kuwaiti oil fires were caused by Iraqi military forces setting fire to a reported 605 to 732 oil wells along with an unspecified number of oil filled low-lying areas, such as oil lakes and fire trenches, as part of a scorched earth policy while retreating from Kuwait in 1991 due to the advances of US-led coalition forces in the Arabian Gulf War. The fires were started in January and February 1991, and the first well fires were extinguished in early April 1991, with the last well capped on November 6, 1991.

The United States's Julin nuclear test series was a group of 7 nuclear tests conducted in 1991–1992. These tests followed the Operation Sculpin series, and were the last before negotiations began for the Comprehensive Test Ban Treaty.

Our Angry Earth: A Ticking Ecological Bomb (1991) is a non-fiction book and polemic against the effects humankind is having on the environment by the science fiction writers Isaac Asimov and Frederik Pohl. In his last non-fiction book, Asimov co-writes with his long-time friend science fiction author Frederik Pohl, and deals with elements of the environmental crisis such as overpopulation, oil dependence, war, global warming and the destruction of the ozone layer.

The Resource Management Act (RMA) passed in 1991 in New Zealand is a significant, and at times, controversial Act of Parliament. The RMA promotes the sustainable management of natural and physical resources such as land, air and water. New Zealand's Ministry for the Environment describes the RMA as New Zealand's principal legislation for environmental management.
The Rotvoll controversy refers to a political controversy in Norway in 1991 concerning the construction of a research and development (R&D) facility for Statoil at Rotvoll outside Trondheim.

Siberia, Siberia is a non-fiction book by the Russian writer Valentin Rasputin. It was originally published in Russian in 1991 by Molodaya Gvardiya. The second and third editions appeared in 2000 and 2006; an English translation is available as well.

The Urban Waste Water Treatment Directive is a 1991 European Union directive concerning urban waste water "collection, treatment and discharge of urban waste water and the treatment and discharge of waste water from certain industrial sectors". It aims "to protect the environment from adverse effects of waste water discharges from cities and "certain industrial sectors". Council Directive 91/271/EEC on Urban Wastewater Treatment was adopted on 21 May 1991, amended by the Commission Directive 98/15/EC.