Since then, scientists' understanding of Earth has improved significantly, and researchers already had begun to suspect that the old estimates were imperfect.
"They were fundamentally flawed in hindsight," said van der Meer.
This process, called subduction,led to volcanism at the surface, with rocks constantly melting and emitting CO2 into the atmosphere.
To do so, the researchers analyzed earthquake waves traveling through Earth, to image the structure of the Earth's interior.
"This method is comparable to CT scans used in hospitals to image inside bodies," van der Meer said.
Chronological Analysis of the Scriptures- Literal interpretation of the scriptures led some people to conclude that the Earth was created approximately 6,000 years old.
In fact, Archbishop Usher of Ireland calculated that the Earth was created at 9 AM on It was believed that prior to the Great Flood, Earths surface was flat and its climate was mild.
The findings suggest much higher CO2 levels than had been estimated in previous studies conducted in the 1980s and 1990s.