8 years ago - Shell released new scenarios last week that explore two possible futures with dramatically different implications for society and the world’s energy system. One scenario sees cleaner-burning natural gas becoming the most important energy source globally by the 2030s and early action to limit carbon dioxide emissions. The other sees solar becoming the top source by about 2070, but with slower action to address the threat of climate change.The New Lens Scenarios look at trends in the economy, politics and energy as far ahead as 2100, and underscore the critical role government policies could play in shaping the future.