Featured Research

from universities, journals, and other organizations

Biofuels Ignite Food Crisis Debate

Date:
January 29, 2009
Source:
Springer Science+Business Media
Summary:
A new study highlights problems linked to converting crops into biofuels. Taking up valuable land and growing edible crops for biofuels poses a dilemma: Is it ethical to produce inefficient renewable energies at the expense of an already malnourished population? Researchers highlight the problems linked to converting a variety of crops into biofuels. Not only are these renewable energies inefficient, they are also economically and environmentally costly and nowhere near as productive as projected.

Study highlights problems linked to converting crops into biofuels. Taking up valuable land and growing edible crops for biofuels poses a dilemma: Is it ethical to produce inefficient renewable energies at the expense of an already malnourished population?

David Pimentel and his colleagues from Cornell University in New York State highlight the problems linked to converting a variety of crops into biofuels. Not only are these renewable energies inefficient, they are also economically and environmentally costly and nowhere near as productive as projected. Their findings are published online in Springer’s journal Human Ecology.

In the context of global shortages of fossil energy – oil and natural gas in particular – governments worldwide are focusing on biofuels as renewable energy alternatives. In parallel, almost 60 percent of the world’s population is malnourished increasing the need for grains and other basic foods. Growing crops, including corn, sugarcane and soybean, for fuel uses water and energy resources vital for the production of food for human consumption.

Professor Pimentel and his team review the availability and use of land, water and current energy resources globally, and then look at the situation in the US specifically. They also analyze biomass resources and show that there is insufficient US biomass for both ethanol and biodiesel production to make the US oil independent.

Their paper then looks at the efficiency and costs associated with converting a range of crops into energy and shows that in each case more energy is required for this process than they actually produce as fuel. The research finds a negative energy return of 46 percent for corn ethanol, 50 percent for switchgrass, 63 percent for soybean biodiesel and 58 percent for rapeseed. Even the most promising palm oil production results in a minus 8 percent net energy return. There are also a number of environmental problems linked to converting crops for biofuels, including water pollution from fertilizers and pesticides, global warming, soil erosion and air pollution.

In the researchers’ opinion, there is simply not enough land, water and energy to produce biofuels. They also argue that ironically, the US is becoming more oil-dependent, not less, as was intended through the production of biofuels. In most cases, more fossil energy is required to produce a unit of biofuel compared with the energy that it provides. As a result, the US is importing more oil and natural gas in order to make the biofuels.

The authors conclude that “Growing crops for biofuels not only ignores the need to reduce natural resource consumption, but exacerbates the problem of malnourishment worldwide by turning food grain into biofuels…Increased use of biofuels further damages the global environment and especially the world food system.”


Story Source:

The above story is based on materials provided by Springer Science+Business Media. Note: Materials may be edited for content and length.


Journal Reference:

  1. Pimentel D et al. Food versus biofuels: environmental and economic costs. Human Ecology, DOI: 10.1007/s10745-009-9215-8

Cite This Page:

Springer Science+Business Media. "Biofuels Ignite Food Crisis Debate." ScienceDaily. ScienceDaily, 29 January 2009. <www.sciencedaily.com/releases/2009/01/090128074830.htm>.
Springer Science+Business Media. (2009, January 29). Biofuels Ignite Food Crisis Debate. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2009/01/090128074830.htm
Springer Science+Business Media. "Biofuels Ignite Food Crisis Debate." ScienceDaily. www.sciencedaily.com/releases/2009/01/090128074830.htm (accessed July 25, 2014).

Share This




More Earth & Climate News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Higgins Breaks Record at Mt. Washington

Higgins Breaks Record at Mt. Washington

Driving Sports (July 24, 2014) Subaru Rally Team USA drivers David Higgins and Travis Pastrana face off against a global contingent of racers at the annual Mt. Washington Hillclimb in New Hampshire. Includes exclusive in-car footage from Higgins' record attempt. Video provided by Driving Sports
Powered by NewsLook.com
Storm Kills Three, Injures 20 at Virginia Campground

Storm Kills Three, Injures 20 at Virginia Campground

Reuters - US Online Video (July 24, 2014) A likely tornado tears through an eastern Virginia campground, killing three and injuring at least 20. Linda So reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins