Their scientists know that the only significant effect of increased CO2 in the atmosphere has been to improve global agricultural output, as CO2 is plant food, or oxygen to plants.
The court heard how the spills saw untreated sewage engulf areas around the loch, "smothering" plant life and starving the surrounding water of oxygen.
Some of the data it gathered about the abundance of phytoplankton - plant-like organisms that convert carbon dioxide into oxygen and provide food for other sea life - could already be monitored by satellite.