Ecologist: Weak climate change targets could mean the end of coral reefs by 2100 if ‘urgent action’ isn’t taken. A new report by the Institute of Physics (IOP) suggests nations have failed to commit to high enough targets to reduce emissions, and warns, unless these are raised, CO2 levels leading to ocean acidification could destroy coral reefs by the end of the century. The IOP’s analysis of the Copenhagen Accord, the international pledge agreed at last year’s Copenhagen climate change …