How Bad Can It Get?

December, 1998

The big worry for many scientists isn't whether the earth is warming or cooling. it's how fast change can happen. We used to think we eased into an ice age or hot spell over decades or hundreds of years. Many scientists now believe we could see a drastic change in the course of a few years. Two scenarios: The warming planet releases moisture in the form of snow that builds up glacial ice, which buries continents and cools the planet. Rising polar temperature melts the West Antarctic ice sheet, r...