Oxygen-starved oceans rapidly dying
Canberra Times: The world's coastal oceans are in crisis, with oxygen-starved ''dead zones'' increasing by a third in just two years as global temperatures increase with climate change, according to the International Whaling Commission's latest scientific report. Dead zones, caused by over-enrichment of waters by nutrients from run-off, sewerage and warming waters, represent ''the worst-case scenario for coastal biodiversity'' and are the ''severest form'' of ocean habitat degradation, the repo...