Vietnam has reduced CO2e emissions by about 240 million tons over three decades by eliminating and controlling certain compounds used in air conditioners and refrigerators.

Some believe turning off the AC saves energy, while others think keeping it running protects the system.

My 2-year-old child has recurrent bronchiolitis. Can I keep the air conditioner on in their room regularly during hot weather? (Mai Lan, Ho Chi Minh City)

Millions of Americans are struggling to afford air conditioning as heat waves intensify, forcing them to limit or completely forgo its use.

Working for extended periods in enclosed, air-conditioned spaces can dry out airways, weaken the body's natural defenses, and increase the risk of bronchitis.