One of the five greatest mass extinctions took place on Earth about 201.6 million years ago ... along with increased levels ...
Carbon dioxide is is the primary driver ... than its pre-industrial value of 280ppm and a level that has not existed on Earth for several million years. While the basic science of how GHGs warm ...
Around 370 million years ago, Earth gradually descended into the longest lived and probably the most intense ice age ...
Over the past 2 billion years, Earth's continents have collided together to form a supercontinent every 200 to 600 million ... appears very bleak. Carbon dioxide levels could be double current ...
the last time the Earth experienced a comparable concentration of CO2 was three to five million years ago, in the mid-Pliocene Epoch. The climate then was 2-3C warmer, and sea levels were 10-20m ...