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If 33-50 per cent of the world’s coral reefs have already been degraded or lost due to climate change and human impacts, most of the functioning reef ecosystems may well disappear by mid-century, say reef scientists.As a first step to estimate the extent of damage to coral reefs, NASA has embarked on an air-borne three-year field experiment called The COral Reef Airborne Laboratory (CORAL), which aims to survey the conditions of the major reefs of the world through remote-sensing.

Read More At The Hindu