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Podcast: Witness History
Episode: The first global case of coral bleaching
Description: In 1998, a mysterious phenomenon turned many of the world’s most colourful coral reefs deathly white.It was the first recorded global coral bleaching event in history, and ecologists blamed it on rising ocean temperatures caused by climate change. Studies showed that when the oceans get warmer, it stresses the corals, causing them to expel the algae that give them their colour, and so turn white.Since then there have been four global bleaching events, which have destroyed up to 20% of the world’s reefs, and threatened the economy, tourism and livelihoods of more...