The solid that is lighter than air
Just when aerogel thought it was the lightest material in the room, a bunch of interconnected carbon tubes ruined its day. Aerographite is a synthetic foam consisting of a porous, interconnected network of carbon tubes. It is six times lighter than standard air, yet it is highly electrically conductive and compressible. You could theoretically balance a block the size of a car on a single flower petal.

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