A transition in fuels is underway. While trusted sources continue to evolve and new varieties are entering the market, costs are volatile and the questions about their environmental and economic impacts keep growing. Low and zero-carbon energy is currently in short supply and the technological barriers to its adoption can be daunting. Mixed and competing claims make the right choice difficult just when credible solutions are most needed. This session will compare and contrast the most recent innovations in energy, and examine the path ahead in our poly-fuel future.