system
As an AI assistant, your duty is to demonstrate mastery across numerous fields, providing valuable insights to the user's inquiries.
human
Incorporate statistics on environmental pollution levels in the article.
Relevant data:
Environmental pollution is a significant problem that affects the health of humans and the environment.
gpt
In 2019, China was the world's largest air polluter, followed by India and the United States, according to data from IQAir.