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Results so far
Which cups smelled like vanilla?
Here's how kids have voted so far:
Pie chart representing percentages at right 25% all of them

29% about half the cups (1-5)

23% about half the cups (6-10)

21% none of them

sneak peek
How's it work?
Nano is a prefix that means "one billionth." Cup 10 contains one part per billion of vanilla! That's one part vanilla for every 999,999,999 parts water! Your nose is more sensitive than your eyes and can detect some scents down to parts per million (Cup 7). Yet, even your nose has trouble with parts per billion (Cup 10). It's small stuff! Experiment with other liquids like vinegar, mouthwash and perfume to test how far you can see AND smell.

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