There’s a saying we like to use when something is already past the point of no return: “you can’t put the toothpaste back in the tube.” But if we lived in Mark Hacks‘ backwards world, not only would that be possible, we could unbreak eggs, unpeel oranges, and objects would roll uphill.
This footage may be 8 years old, but it doesn’t make it any less impressive. Watch as then high school student Anna Gu demonstrates a bridge she made from layered and glued sheets of paper that was so strong that the hook that held the weights failed before it did. Design here.
Work out like a caveman with these prehistoric style dumbbells, kettlebells, ropebells, clubbells, and gripbells made from hunks of granite. Their handles are made from Finnish birch wood. (Thanks Kema!)
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