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 degrees Celsius, preferably to 1.5 degrees Celsius, compared to pre-industrial levels.

China is the largest emitter of greenhouse gases in the world, accounting for about 28% of global emissions. The United States is the second largest emitter, accounting for about 15% of global emissions.

Agriculture is the main cause of deforestation in the Amazon rainforest. The demand for land for cattle ranching and soybean farming is driving the destruction of the rainforest.

China has the largest number of dams in the world, with over 87,000 dams. The United States is the second largest dam builder, with over 9,000 dams.

The Convention on Biological Diversity is an international treaty that aims to protect biological diversity and ensure the sustainable use of biological resources.

Australia has the largest marine protected area in the world, covering an area of over 3.5 million square kilometers.

The Montreal Protocol is an international treaty that aims to reduce the production and use of ozone-depleting substances. The treaty has been successful in reducing the levels of ozone-depleting substances in the atmosphere.

Brazil has the highest rate of deforestation in the world, with over 1.3 million hectares of forest lost each year.

The Ramsar Convention is an international treaty that aims to protect wetlands. The treaty has been successful in protecting over 2,300 wetlands around the world.

The United States has the largest number of national parks in the world, with over 60 national parks.

The Bonn Convention is an international treaty that aims to protect migratory species. The treaty has been successful in protecting over 1,000 migratory species around the world.

Italy has the largest number of UNESCO World Heritage Sites, with over 50 sites.

The MARPOL Convention is an international treaty that aims to protect the marine environment. The treaty has been successful in reducing pollution from ships.

Brazil has the largest number of biosphere reserves in the world, with over 70 biosphere reserves.

The Montreal Protocol is an international treaty that aims to protect the ozone layer. The treaty has been successful in reducing the levels of ozone-depleting substances in the atmosphere.