natural phenomenon
- n all phenomena that are not artificial
natural phenomenon :
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- The Smartphone Apps That May Be Killing Birds
The ubiquity of smartphones, and the plethora of available apps, has made reliable citizen science possible in backyards and city parks across the country. Just about anyone can snap a picture, make an audio recording, tag a GPS location and document any natural phenomenon or rare species with the tap of a finger.
June 13, 2013 - Takepart.com via Yahoo! News