The Clean Air Act is the comprehensive federal law that regulates air emissions from stationary and mobile sources.

The Paris Agreement is a legally binding international treaty on climate change. The goal of the agreement is to limit global warming to well below 2, preferably to 1.5 degrees Celsius, compared to pre-industrial levels.

The Clean Water Act is the comprehensive federal law that regulates water pollution in the United States.

The Endangered Species Act is a federal law that aims to protect and conserve endangered and threatened species and their habitats.

The Ramsar Convention is an international treaty for the conservation and sustainable use of wetlands.

NEPA requires federal agencies to consider the environmental impacts of their proposed actions and to disclose those impacts to the public.

The Montreal Protocol is an international agreement that aims to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances.

RCRA is the comprehensive federal law that regulates the generation, transportation, treatment, storage, and disposal of hazardous waste.

Agenda 21 is a comprehensive plan of action adopted at the 1992 Earth Summit in Rio de Janeiro, Brazil, with the goal of achieving sustainable development.

CERCLA, also known as Superfund, is a federal law that authorizes the cleanup of hazardous waste sites and provides for liability for the costs of cleanup.

The Convention on Long-Range Transboundary Air Pollution is an international treaty that aims to reduce emissions of sulfur dioxide and nitrogen oxides, which cause acid rain.

TSCA is a federal law that regulates the manufacture, distribution, and use of toxic substances in the United States.

MARPOL is an international treaty that aims to prevent pollution of the marine environment from ships.

FIFRA is a federal law that regulates the sale, distribution, and use of pesticides in the United States.

The Convention Concerning the Protection of the World Cultural and Natural Heritage is an international treaty that aims to protect the world's cultural and natural heritage.