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The Rising Seas

This chapter focuses on the impacts of glacier melt on our oceans and related sea level rise. It discusses past and present sea levels and the relative influence of the ice age cycles. The chapter also reviews risks posed now to life on Earth due to glacier melt and related sea level rise, considering these in relation to ongoing and new flooding impacting coastal areas. It goes on to discuss the theories of Hot House Earth and Snowball Earth, the likelihood of these scenarios being realized, and the impact of high levels of CO2 concentrations on the likelihood of either eventuality.