I discovered a way to identify the millions of species on Earth after a lightbulb moment in the supermarket
Briefly

As a child, I could identify about 700 butterfly and moth species by sight... identifying them quickly became an impossible task.
What if a segment of DNA could be used to differentiate between species? Just 13 lines on the supermarket barcodes were being used to identify everything around me.
Read at www.theguardian.com
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