Presented By

SPECIAL MENTION: Propane is a limited source of global greenhouse gas emissions compared to diesel or oil, but Oberon Fuels believes that it has found a way to make it even greener. By capturing methane and converting it into dimethyl ether that’s low-carbon or carbon negative, then adding it to propane, the company says it lowers propane’s carbon footprint by up to 60%.

More Must-Reads From TIME

Contact us at letters@time.com.

Hydration Made Fun
A Modern Flip Phone
A Saliva Pregnancy Test
More Than a Fast Car
A Breakthrough Bassinet
EDIT POST