The Paris Agreement, adopted in 2015, is a legally binding international treaty that aims to limit global warming to well below 2 degrees Celsius, preferably to 1.5 degrees Celsius, compared to pre-industrial levels.

The Clean Air Act, enacted in 1970, aims to protect human health and the environment by reducing air pollution and improving air quality through various regulations and standards.

The Resource Conservation and Recovery Act (RCRA), enacted in 1976, regulates the generation, transportation, treatment, storage, and disposal of hazardous waste.

The Endangered Species Act, enacted in 1973, aims to protect and recover threatened and endangered species and their habitats, including plants and animals.

The Montreal Protocol, adopted in 1987, is an international treaty that aims to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances, such as chlorofluorocarbons (CFCs).

The Clean Water Act, enacted in 1972, aims to protect and restore the quality of the nation's waters, including rivers, lakes, streams, wetlands, and coastal waters.

The Toxic Substances Control Act (TSCA), enacted in 1976, regulates the use and production of toxic chemicals, including their manufacture, processing, distribution, use, and disposal.

CERCLA, also known as Superfund, aims to clean up hazardous waste sites and address the environmental and health risks associated with them.

UNCLOS, adopted in 1982, is a comprehensive international treaty that establishes a legal framework for the use and protection of the world's oceans and seas.

NEPA, enacted in 1969, requires federal agencies to consider the environmental impacts of their proposed actions and alternatives, and to disclose this information to the public.

This treaty, adopted in 1972, aims to protect and preserve cultural and natural sites of outstanding universal value for the benefit of present and future generations.

The Clean Air Act Amendments of 1990 significantly expanded and strengthened the Clean Air Act, setting new standards for air pollution control and addressing issues such as acid rain, smog, and ozone depletion.

The Atomic Energy Act, enacted in 1954, regulates the development, use, and disposal of nuclear energy and radioactive materials.

The Safe Drinking Water Act, enacted in 1974, aims to protect public health by ensuring the safety of drinking water through regulations and standards.

The Stockholm Convention, adopted in 2001, aims to protect human health and the environment from the harmful effects of POPs by eliminating or restricting their production and use.