Yellowstone National Park was established in 1872, becoming the first national park in the United States.

Gifford Pinchot, the first Chief of the United States Forest Service, is widely regarded as the father of American conservation.

President Lyndon B. Johnson signed the Wilderness Act of 1964, which established the National Wilderness Preservation System.

In the early 20th century, the conservation movement primarily focused on protecting forests, particularly in the wake of widespread deforestation.

The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) was signed in 1973 to regulate and control the international trade of endangered species.

The primary goal of the Endangered Species Act of 1973 is to protect and conserve endangered and threatened species and their habitats.

The Exxon Valdez oil spill in 1989 caused extensive damage to the environment and raised global awareness about the need for stricter environmental regulations.

The Kyoto Protocol's primary goal is to reduce greenhouse gas emissions and mitigate climate change.

The United Nations Convention to Combat Desertification (UNCCD) is an international agreement that aims to combat desertification and land degradation.

Ecological restoration is the process of restoring degraded ecosystems to their natural state, often involving the reintroduction of native species and the removal of invasive species.

The United Nations Environment Programme (UNEP) was established in 1972 to promote international cooperation on environmental issues.

The Ramsar Convention on Wetlands aims to protect wetlands and their biodiversity, recognizing their ecological, cultural, and economic importance.

The Rio Declaration on Environment and Development, adopted in 1992, promotes sustainable development and sets out principles for environmental protection and economic growth.

Net zero emissions refer to achieving a balance between greenhouse gas emissions and removals, resulting in no net contribution to climate change.

The Montreal Protocol on Substances that Deplete the Ozone Layer is an international treaty that aims to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances.