December 4, 2009This morning at Johnson Space Center the snow started falling. Many JSC employees (not this one) were sent home early. This is the earliest Snow Day in Houston on record. Snow Day comes in the midst of controversy about Earth's climate. This issue involves climate data from NASA's Goddard Institute of Space Studies. The climate is a complex issue, involving everything from human activity to solar luminosity and the speed of light. As readers have seen before, "c change" us coming in science.