Species living in the same places tend to have similar heat tolerances, so when certain warming thresholds are passed, catastrophic losses of biodiversity are likely, writes Dr Joseph Williamson (UCL Centre for Biodiversity & Environment Research) in The Conversation. Last year, much of the world’s largest coral reef system was transformed into a white boneyard, featuring ghostly silhouettes of horns, brains and lettuces. The threat of sudden biodiversity loss from climate change had been