Smithsonian Magazine on MSN
Earth Is Getting Dimmer—and the Northern Hemisphere Is Losing Brightness Faster Than Scientists Expected
Earth has been dimming for decades, reflecting less light back into space—and the amount of light reflected by the Northern ...
Spring officially begins today (March 20) with the vernal equinox, bringing longer days and warmer temperatures to the Northern Hemisphere. The vernal equinox signals the astronomical start of spring ...
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