How Does the Tilt Affect Climate?
		q At present-day, the axis is tilted at an angle of 23.5°, referred to as Earth’s “obliquity”, or “tilt”. q The Sun moves back and forth through the year between 23.5°N and 23.5°S. q Earth’s 23.5° tilt also defines the 66.5° latitude of the Artic and Antarctic circles. No sunlight reaches latitudes higher than this in winter day. q The tilt produces seasons!!