National Read Across America Week 2025 Events. Read across america is an annual celebration of reading that schools all across the country participate in. A polar vortex is an area of low pressure and cold air that swirls like a wheel around each of earth’s two polar regions.

A polar vortex is an area of low pressure and cold air that swirls like a wheel around each of earth’s two polar regions. This special week kicks off on the birthday of dr.