"It’s completely unrealistic to think we could eliminate emissions by 2030," Gates told Fox News. "Not seeing that this problem is hard will be part of the difficulty of getting engaged in it," he added.
In 2020, Microsoft announced it aims to completely remove its carbon footprint and become carbon negative by 2030.
"If we wait 10 more years it's not as bad as if we wait 20 or we wait for 30, because the temperature just keeps going up," he said. Gates said he is looking at 2050 because it "happens to be the soonest realistic date for the world to change all of these sorts of emissions."