Earth's seasons — winter, spring, summer and autumn(or fall) — are caused by the yearly revolution of the Earth in its orbit around the sun and the planet's tilt. When the Northern Hemisphere is pointed toward the sun, it is summer, and when it is pointed away, it is winter (and vice versa for the Southern Hemisphere). Summer and winter are heralded by their respective solstices, while spring and fall begin at an equinox, when the sun crosses Earth's equator and night day are roughly equal length. Below, our stories that relate to Earth's seasons and the ways they affect us.
Which of the 12 months has the most births? And why do babies tend to be born at certain times of the year?
If the surface of your skin gets too chilly, the brain sets into motion a series of warming tricks such as shivering.
Reference Discover more about the season where the leaves turn red and the temperature drops.
Reference Everything you ever wanted to know about summer, the hottest season of the year.
Reference Winter, the coldest season of the year, comes between autumn and spring. It is associated with plunging temperatures and icy weather, but its impact and timing change according to location.
Reference Seasons are periods of the year with distinct weather conditions and day lengths. Earth's four seasons are spring, summer, autumn (fall) and winter.
Spring will officially arrive on Saturday morning (March 20) with the occurrence of the vernal equinox.
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