Topic: Seasons

A graphic of the Earth’s orbit around the sun. Meteorological seasons: Winter starts on Dec. 1, spring on Mar. 1, summer on June 1, and fall on Sept. 1. Astronomical seasons: Winter begins on the winter solstice (Dec. 21) when the North Pole is tilted to the max extent away from the sun, spring begins on the spring equinox (Mar. 20), summer begins on the summer solstice (June 21), when the North Pole is tilted to the max extent toward the sun, and fall begins on the autumnal equinox (Sept.21).
Changing seasons

In many parts of the United States, you might change your wardrobe with the seasons, grabbing a heavy coat in winter, while wearing only a light t-shirt in summer. Although ecosystems, plants, and animals cannot adjust their attire quite so easily, they have evolved to make changes that help them survive seasonal conditions caused by the rotation of the Earth around the sun.

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Education
Topics:
climate outlooks
seasons
education
A graphic of the Earth’s orbit around the sun. Meteorological seasons: Winter starts on Dec. 1, spring on Mar. 1, summer on June 1, and fall on Sept. 1. Astronomical seasons: Winter begins on the winter solstice (Dec. 21) when the North Pole is tilted to the max extent away from the sun, spring begins on the spring equinox (Mar. 20), summer begins on the summer solstice (June 21), when the North Pole is tilted to the max extent toward the sun, and fall begins on the autumnal equinox (Sept.21).
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