claim: The current debate on the connection between CO2 emissions and climate change has largely overlooked an independent and equally serious problem, the increasing acidity of our oceans.
evidence: Also, the Intergovernmental Panel on Climate Change ( IPCC ) writes in their Climate Change 2007 : Synthesis Report : The uptake of anthropogenic carbon since 1750 has led to the ocean becoming more acidic with an average decrease in pH of 0.1 units.