- Radiation...
	...everything radiates!
	...described by "wavelength" and "amplitude"
	...wavelength of peak emission

- Temperature...
	...a measure of the average KINETIC ENERGY of the molecules of an object
	...the greater the kinetic energy, the higher the temperature, thus...

	- as temperature increases...
		...emitted energy (radiation) increases
		...wavelength of peak radiation decreases

- Balance of radiation
	- Absorptivity (color)
	- Intensity (sun angle)
	- Net Heating/Cooling

- Absorptivity: transparent vs opaque
       - Ozone vs ultraviolet radiation
       - Greenhouse gases (primarily water vapor and carbon dioxide)

- Annual Cycle: tilt of the earth's axis