Carbon dioxide CO2 emissions, resulting from the combustion of fossil fuels by human activity, reinforce the greenhouse effect and cause climate disruption. While public awareness of this global problem is growing, ocean acidification, described as "the other CO2 problem", is still considerably unknown.In this book, the authors answer ten key questions on the biogeochemical basis of acidification, on past, current and future trends, on the impact on marine organisms and humans, and finally on remediation measures.It draws its answers from fields as diverse as biogeochemistry, ecology, physiology, evolution, aquaculture and fisheries, economics and sociology.