There are many different types of alternative fuels. Some fuels require food crops while others can be produced from waste feedstocks. How these fuels are produced and the environmental footprint of each process and fuel are important considerations.
How does higher mixed alcohol fuel compare to ethanol? Here’s a side-by-side comparison. What about methanol and biodiesel? Learn more in our Alternative Fuels Primer.
The risks of business as usual: fossil energy emissions, and pollution from landfilling, incineration and illegal open dumping of society’s solid, liquid and gaseous carbon wastes poses grave risks to humanity, the global environment and the food chain. Here’s a short visual rundown of the problems.