As humans put more green house gasses into the atmosphere the temperature of the Earth in turn increases

As humans put more green house gasses into the atmosphere the temperature of the Earth in turn increases

• As humans put more green house gasses into the atmosphere the temperature of the Earth in turn increases

• Believers in Gaia would suggest that the Earth will eradicate this problem on its own

• Life on Earth will take care of this excess by absorbing the gasses

Early in the Sun’s evolution it was far cooler than it is presently

• Early in the Sun’s evolution it was far cooler than it is presently

• Over time as the Sun’s temperature increased, CO2 levels decreased

• CO2 was absorbed by the rocks and oceans

• Where greater quantities of green house gasses were present, the Earth was warmer

Weak Gaia

• Weak Gaia

• The theory that organisms on Earth alter their composition to survive
• Evolution

• Strong Gaia

• The theory that the Earth is consciously changing the atmosphere and organisms to survive
• Far less accepted