A good point was made below on the need for more humility — nuance even — in the debate on how to deal with the increase in greenhouse gases. What’s also needed is good reporting. There might be evidence of an increase in plant growth, but what does that really mean? Are they toxic algae, possibly responsible for depleting the sea of its oxygen and killing ocean life? The booming biosphere argument also fails to address other worrying threats, such as the acidification of the sea. There’s much about this complex ecosystem that we don’t understand, as the Economist argues in its comprehensive special report on the sea. We must learn much more about it. In the meantime our ignorance should not stop from taking preventative or corrective measures.
Below, John Grimond, the author of the report, discusses some of the threats to the sea :