Solar needs to get far cheaper to compete with fossil fuels on a large scale.
Such fuels could displace petroleum-based fuels on a gallon-for-gallon basis and be incorporated into today's vehicles and infrastructures with no impact on performance.
In this study, we examine the FCI of transportation fuels on a lifecycle basis within a specific state, Minnesota, and compare the results to FCIs using national averages.
Producing and using alternative transportation fuels on a large scale across the United States, Obama has noted, is a "problem that may not be solved in one year or one term or even one decade".
Mr. Marrero said the company is conducting a two-year experiment with alternative fuels on a handful of its trucks in Brooklyn and so far the early results have been encouraging.
We know from direct measurement that the concentration of carbon dioxide in the atmosphere has increased by more than 40percentt since the beginning of the Industrial Revolution, when humans started burning fossil fuels on a large scale.
