Researchers studying 'doomsday glacier' make worrying discovery

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6. Sea levels are starting to rise faster: Here's how much South Florida is expecting

Two feet of sea rise by 2060, compared to present-day levels, would be a shock to the system for Miami, where the average elevation is three feet. That's why local governments—and the state—are spending billions to keep streets dry.

However, pinning down exactly how much sea rise South Florida could experience is a tough task.

Researchers know the two main factors in sea level rise are the temperature of the ocean and how much the ice sheets melt. As burned fossil fuels trap more heat in the atmosphere, that heat is largely being absorbed by the ocean. Hotter water physically takes up more space than cold water, so a hotter ocean means higher sea