The U.S. Environmental Protection Agency (EPA) has pointed out that since the industrial revolution, which started around 1800, human activities have released large amounts of carbon dioxide (CO2) due to fuel burning and other ‘greenhouse gases’ such as methane, nitrous oxide, and compounds of sulphur, phosphorous, ozone into the atmosphere, changing the earth’s climate.
Alarming increase
Atmospheric carbon dioxide levels have increased by over 40%, from 280 ppm in the 18th century to 414 ppm in 2020, and greenhouse gases level by over these 200 years.
