Past Saharan change has global warming implications

A slight change in Earth's axial tilt has been implicated in the drying of the Sahara to today's conditions.

And, it has implications for global warming. Why?

Scientists from NASA's Jet Propulsion Laboratory say that the current melting of ice in Greenland is already causing the tilt to change at a rate of approximately 2.6 centimeters each year. They predict that his change could increase in the years ahead.

Now, this change may seem slight. But, not to anybody who knows anything about Milankovich cycles and Earth's ice ages and warming periods in the past.