By American Geosciences Institute (AGI); Earth Science Week (ESW); National Oceanic and Atmospheric Administration (NOAA)
In ancient times, sailors found their way by observing stars and other celestial bodies â€” when they were visible through the clouds, that is. Thus, one of the most important improvements to ocean navigation was the invention of the compass. There is some disagreement about who should get...
Grade Level 6 7 8
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