Guardian: A new small British bike maker claims to craft ethical and environmentally friendly bicycles. But what’s wrong with the rest of the manufacturers? “Just because you’re green on one side of your life, that doesn’t justify just ignoring another part. You should be as green as you can be,” says Diego Lombardi, co-owner of new start-up cycle maker Racer Rosa Bicycles. While bicycles are undeniably a green and pleasant form of transport, their production is largely tainted. If …