This is an important issue. Signs of global collapse are occurring everywhere. The American media continues to hide the evidence. You won’t find hardly any of this on television.
The top 2,000 meters of the world’s oceans have been acidified, shrinking the total amount of ocean habitat where organisms that incorporate calcium carbonate (CaCO3) into their shells and skeletons can thrive (Caldeira and Wickett 2003, Sabine et al. 2004, Orr et al. 2005, Denman et al. 2007, Feely et al. 2008, Ilyina et al. 2009, Silverman et al. 2009).