Science News Daily describes a scale that can measure weights down to the attogram range. For those who do not know, as I didn't, an attogram is 0.0000000000000000001 of a gram! Said another way, it can measure particles as small as one millionth of a trillionth of a gram. Or in another scale, since the US Dollar weighs in at one gram..... our national debt at $17 Trillion is, in attograms:
17,000,000,000,000,000,000,000,000,000,000,000 attograms of our currency!
[clipper]
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