Is there more CO₂ in the atmosphere now than there was 10 years, 20, 50, 100 years ago?

Best-selling author and scientist Gregg Braden: "Climate change is a fact... It's also a fact that humans are not causing it."

"Is there more CO₂ in the atmosphere now than there was 10 years, 20, 50, 100 years ago? The answer is absolutely yes. Is it a bad thing?
The answer is no."

"We're right about 440 parts per million right now. In geologic history... the Jurassic [had] over a thousand parts per million. Triassic, 2,000 parts per million."

"The Earth was lush. The Earth was green. Life was abundant during that time."

Credit: @GreggBraden @missmayim