It recently rolled out a liquid product called Eclipse that helps protect fruit from getting sunburned, which discolors produce and can destroy it.

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Some downplay counterparty risk, but consider that Lehman Brothers issued ETNs less than three weeks before declaring bankruptcy in 2008, leaving investors holding a product that was no longer liquid and was now an obligation of a bankrupt counterparty.

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Dr. Bronner's best-selling product, a bottle of all-purpose liquid hemp peppermint Castile soap, is not your run-of-the mill cleanser.

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The Atlanta-based company claims to be the first candy maker in the world to have completely overhauled its product line--including sour Suck Ups liquid candy, Super Sweet or Sour Blast spray candy, Xtra Sour Goo and Dream Chews--in 2004 to remove all refined sugars and replace them with fruit juice concentrate.

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Current designs can produce two kilowatts per cubic meter of liquid reactor volume and without any drawbacks (some models produce methane as a by-product, this tech does not).

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