This week on TreeHugger, an awesome camping trailer that turns into a boat, a new folding e-bike design that you can help perfect, raincoats you can drink from, and more! 1. 8 Ways to Save Energy ...

Movie: Ecole Cantonale d’art de Lausanne (ECAL) student Thibault Penven has designed a folding boat. Called Ar Vag ... by pushing two folding rods, like tent poles, into pockets in the rim.

The Melina pulls out accordion-style into a tent or folds together for a flatter profile. Two gray straps attached to one end of the tent allow the user to carry the Melina around like a backpack.