Tyson then notes the delicate nature of the amount of carbon dioxide in the atmosphere can influence Earth's climate due to the greenhouse effect, and that levels of carbon dioxide have been increasing since the start of the 20th century.
Tyson kemudian menjelaskan bahwa kandungan karbon dioksida di atmosfer dapat memengaruhi iklim Bumi akibat efek rumah kaca, dan tingkat karbon dioksida terus bertambah sejak awal abad ke-20.