Co2 Levels

Climate change: Breached 400 ppm CO2 levels in atmosphere to remain for our lifetime, say scientists

CO2 concentration levels in the atmosphere have risen above 400 parts per million, but this time they will endure for our lifetimes, says scientists

Another unfortunate milestone: South Pole CO2 levels cross 400 ppm first time in 4 million years

The Earth passed another unfortunate milestone when CO2 levels surpassed 400 parts per million (ppm) at the South Pole for the first time in 4 million years, according to US scientists.

CO2 levels behind ancient global climatic shifts, says new study

Atmospheric carbon dioxide (CO2) concentration was the major driver behind the global climatic shifts that occurred between 53 and 34 million years ago.

Scientists to study impact on Amazon rainforest if CO2 levels rise

A group of scientists will gauge the impact on the world's largest rainforest if a time comes when the planet has 30 percent more carbon dioxide (CO2).