Corn-Based Ethanol Is Actually Worse For The Environment Than Gasoline, Study Finds

New research by the University of Wisconsin-Madison Center for Sustainability and the Global Environment has suggested that ethanol produces more greenhouse gas emissions than gasoline. While past research has indicated the opposite, UW-Madison’s study showed that ethanol is responsible for at least 24 percent more carbon emissions. The study was funded in part by the US Department of Energy and the National Wildlife Federation as the Biden administration reviews the country’s existing biofuel policies.
This comes as a surprise to anyone who remembers the implementation of the Renewable Fuel Standard (RFS) in 2005. Based on research that previously showed ethanol was better for the environment than gasoline, the RFS dictated that oil refineries must mix approximately 15 billion gallons of ethanol into the nation’s gasoline supply. As the UW-Madison study points out, the RFS now “guides nearly half of all global biofuel production”—which, despite its good intentions, has far-reaching industrial implications that negatively impact Earth.

Because oil refineries required such large quantities of ethanol, corn prices shot up by 30 percent. High demand resulted in an 8.7 percent increase in US corn cultivation—the byproduct of which was an increase in the nation’s nitrogen-based fertilizer use. Tilling the cropland associated with corn production released carbon trapped in the soil. (It’s also worth mentioning that the study points to a negative impact on the nation’s water supply, thanks to an increase in water degradants.) Once these factors are considered alongside the combustion emissions, UW-Madison concluded, ethanol is no longer as attractive a supplement to the US fuel supply as previously thought.
“The carbon intensity of corn ethanol produced under the RFS is no less than gasoline and likely at least 24 percent higher,” reads the study, published earlier this year in the Proceedings of the National Academy of Sciences.
While most of ethanol’s negative effects appear to be associated with corn cultivation rather than combustion, the effort to reduce carbon emissions must be a holistic one that considers the whole supply chain. The RFS is currently set to impose fuel-mixing requirements through 2022, after which the US Environmental Protection Agency is eligible to propose changes to the nation’s policies.
Continue reading

Scientists Confirm the Presence of Water on the Moon
Scientists have confirmed the discovery of molecular water on the moon. Is there any of it in a form we can use? That's less clear.

Review: The Oculus Quest 2 Could Be the Tipping Point for VR Mass Adoption
The Oculus Quest 2 is now available, and it's an improvement over the original in every way that matters. And yet, it's $100 less expensive than the last release. Having spent some time with the Quest 2, I believe we might look back on it as the headset that finally made VR accessible to mainstream consumers.

SpaceX Launches ‘Better Than Nothing’ Starlink Beta
Those lucky few who have gotten invitations to try the service will have to pay a hefty up-front cost, and the speeds aren't amazing. Still, it's a new generation of satellite internet.

Samsung, Stanford Built a 10,000 PPI Display That Could Revolutionize VR, AR
Ask anyone who has spent more than a few minutes inside a VR headset, and they'll mention the screen door effect. This could eliminate it for good.