Imagine waking up after an ice storm. Everything is coated with crystal -- your car, every tree branch and blade of grass, the walkways and roads – everything under a crust of ice.

It’s 21 degrees (-6 Celsius). The sun comes up and it’s 22 degrees, then 23, then 24. Everything is still frozen. The sun keeps rising and the temperature slowly, slowly climbs: 25, 26, 27, 28.

Is anything happening? Is anything changing? Everything is still frozen!