The U.S. Environmental Protection Agency (EPA) announced final 2013 biofuel volume requirements under the Renewable Fuel Standard. Issued Tuesday, the final rule lowers targets for biofuels production in 2014--requiring that 16.55 billion gallons of renewable fuels be blended into the U.S. fuel supply including 1.28 billion gallons from biomass-based diesel fuel and 2.75 billion gallons from advanced biofuels. These are the same quotas proposed by the EPA in February. The agency's initial 14 million gallon cellulosic biofuel quota, however, was dropped to 6 million gallons.
Additional time was also given for refiners to meet 2013 volume quotas. The EPA now requires compliance by June 30, 2014--a four-month extension. When it comes to future quota limits, the EPA says it will utilize "flexibilities" in the law to reduce the amount of biofuel needed next year, when a "wall" is projected.
The Washington Post offers some backstory on why the targets--which were supposed to hit 16.55 billion gallons in 2013 and rise to 36 billion gallons in 2022--have been hard to reach.
Study: Sea Level Rise Threatens to Put Cities Underwater
A new study finds rising sea levels will threaten some 1,400 cities and towns in the United States by 2100 if global emissions continue to increase. Prior emissions have locked in 4 feet of future sea level rise, the study suggests, and 3.6 million Americans live in 316 municipalities already at risk, in places such as New Orleans, Fort Lauderdale and Atlantic City. Should global emissions continue to increase, the study states that the world may experience 23 feet of sea level rise by the end of the century, putting more than 1,000 cities and towns at risk.
"The current trend in carbon emissions likely implies the eventual crippling or loss of most coastal cities in the world," said Benjamin Strauss, a study author and Climate Central scientist. "It's like this invisible threat."
Keystone XL Decision Could Experience Further Delays
Although President Barack Obama vowed to rule before 2014 on the Keystone XL pipeline--which would carry crude oil from Canada to the Gulf of Mexico--an upcoming trial could delay a final decision (subscription). The suit, set for trial in Nebraska Sept. 27, contends the Nebraska state legislature unconstitutionally gave Gov. Dave Heineman authority to approve the pipeline's route. A win could force a more than 1,000-mile leg of the project to go through the siting process again.
Mother Jones reports that another pipeline project is quietly moving ahead. The 774-mile Eastern Gulf Crude Access Pipeline project would run from Illinois to Louisiana and is projected to carry oil quantities similar to those that could flow through the Keystone XL by 2015.
Warming Climate Linked to More Violent Behavior
When temperatures rise, so does aggression, according to a new study in the journal Science. The analysis looked at several dozen studies examining the relationship between climate and conflict in most regions of the world over the last 10,000 years. It revealed that even slight spikes in temperature have increased the risk of personal violence and social upheaval throughout history, a finding that could have critical implications for understanding the impact of climate change on future societies.
"Past climatic events have exerted significant influence on human conflict," the study authors wrote (subscription). "If future populations respond similarly to past populations, then anthropogenic climate change has the potential to substantially increase conflict around the world, relative to a world without climate change."
Some national security experts and scholars are skeptical of the conclusion, questioning whether the link to climate change is established and citing prior studies that suggest the opposite connection is true. Authors of the Science study have taken on some of these critiques.
The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University's Nicholas Institute for Environmental Policy Solutions.