I've had this idea for a few years and wonder if it would be feasible. Rather than simply recycling bottles and bags in blue bins, if there could be a way to melt down all types of plastic and mold into large bricks, like big Lego. It sounds silly, but these could be used to build or insulate jus...

Wind turbines just seem to keep growing. Predictions a few years ago that a 120-metre diameter rotor was going to be the maximum, have turned out to be wrong, and 154-metre rotors are being installed now, with 180-metre ones being designed. But a bigger rotor means longer blades; and more force ...