Shell’s Rio roadshow: springboard for green startups or just a Lott of oily spin? | Jonathan Watts

Shell is not an obvious champion of sustainable business ideas but, beyond the glitz of an event staged in a Rio favela, and featuring pop stars like Pixie Lott, the oil firm has a chance to show it is serious about renewable energy investmentCan you imagine a more affordable source of lighting for the world’s poorest families than a lamp powered by gravity, or a more ingenious way to charge electric cars than by harvesting the air turbulence they cause alongside motorways? Can you imagine