The de facto assumption of climate change policy is that the world must limit the increase in global temperatures to 3.6 degrees Fahrenheit (2 degrees Celsius) above pre-Industrial levels, or risk hitting a tipping point where the impact becomes irreversible.
This undated handout photo provided by NASA shows the Thwaites Glacier in West Antarctic. (AP Photo/NASA)
It’s one of the most important questions on the planet: How much are the seas ultimately going to rise, thanks to what we’re doing to the atmosphere with all our cars and power plants? Scientists are still struggling to find a clear answer to it...