Hungary (2050)

Top achievers Finland

Zero per cent of its population is exposed to air pollution. Finland is aiming to achieve carbon neutrality by 2035.

Norway

Only 2% of the people are exposed to air pollution. Its carbon neutrality target is 2050.

New Zealand

Zero per cent of the population is exposed to air pollution.

Australia

The country has the secondhighest percentage of protected land and marine areas.

USA

The US has promised to cut its emissions by at least 50 per cent by 2030, more than double its pledge under Paris Agreement.

Peru

On April 1, 2018, Peru became the first in the world to set up a specialised environmental court or juzgado ambiental.

Tunisia

Set up Green Police in 2017 to tackle illegal dumping.