Tuesday, April 28, 2009

Ocean Acidification Risks Mass Extinction of Sea Life

The oceans are becoming more acid.

This is due to rising carbon dioxide (CO2) emissions.

There is therefore a major threat to aquatic life.

Carol Turley of Plymouth Marine Laboratory says: "I am very worried for ocean ecosystems which are currently productive and diverse.

"I believe we may be heading for a mass extinction, as the [current] rate of change in the oceans hasn't been seen since the dinosaurs. It may have a major impact on food security. It really is imperative that we cut emissions of CO2."

50 percent of the carbon dioxide emitted by the burning of fossil fuels or other substances is absorbed by the ocean.

Carbon dioxide reacts with water to form carbonic acid.

This has led to a lowering of the ocean's pH by 0.1 since the Industrial Revolution - a 30 percent increase in acidity.

Ocean Acidification Risks Mass Extinction of Sea Life


Wednesday, April 01, 2009


Air pollution over Los Angeles - source

"The draft G20 communique leaked at the weekend makes only the smallest reference to climate change, and appears to be vague on the subject of how green the $2tn (£1.4tn) stimulus package agreed by world leaders should be.

"This provoked the eminent climatologist James Hansen, director of Nasa's Goddard Institute for Space Studies, to tell the Guardian: 'If this is the best they can do, then their 'planet in peril' rhetoric is probably just that - empty rhetoric.'"

Climate change experts call on G20 members to commit to action