(From Nature.com [later: sorry, it’s now behind a cost wall]) “Bouncing backpacks can make hiking easier, researchers have shown.Lawrence Rome and his colleagues at the University of Pennsylvania have designed a backpack in which the load hangs suspended by bungee cords from a frame strapped to the walker’s back.”
According to the article, they don’t have a product on the market yet, but plan to develop one.
Note: There’s a link to a video that shows how it works, however, this would have been a great place for a video sidebar that could have told the story on one page. Come to think of it, a video sidebar is like adding bungee cords to your backpack — it makes understanding how something works easier.
(via: NYTimes.com, third item.)