More than 500 million people on earth live on a river delta, according to a news release about the new study. The tipping point between delta resilience and collapse will likely occur within the next 50 years, according to the study. “It could be sooner than that,” Turner said. “The history of making these predictions is that scientists tend to be conservative.”

Source: Sea level rise threatens deltas around the world, study finds | NOLA.com