Atmospheric levels
The last time CO2 levels were as high as they are today was 3 million years
ago
Climate.mit- ideal CO2 levels in the atmosphere are between
280 -350ppm.
NASA.climatechange – current Carbon dioxide levels are 416ppm
In the past 171 years, CO2 levels have increased by 48 - 50%.
the equivalent of 20,000 years of natural increase
Since 1960, 2000 billion metric tons have been
hjhhj added to the atmosphere
Pre industry – 278ppm
Carbon dioxide – 0.04% of atmosphere
Carbon
Future predictions
UN global goal – Carbon neutral by 2050
The last time CO2 levels were as high as they are today was 3 million years
ago
Climate.mit- ideal CO2 levels in the atmosphere are between
280 -350ppm.
NASA.climatechange – current Carbon dioxide levels are 416ppm
In the past 171 years, CO2 levels have increased by 48 - 50%.
the equivalent of 20,000 years of natural increase
Since 1960, 2000 billion metric tons have been
hjhhj added to the atmosphere
Pre industry – 278ppm
Carbon dioxide – 0.04% of atmosphere
Carbon
Future predictions
UN global goal – Carbon neutral by 2050
