Featured Research

from universities, journals, and other organizations

Potential food crisis with global warming, UK scientists warn

Date:
July 4, 2012
Source:
Manchester University
Summary:
UK consumers could face dramatically reduced food choices in the future unless much more is done to cut greenhouse gas emissions, a hard-hitting report warns. Food which families now take for granted, such as meat and fresh vegetables, could become too expensive for many if global temperatures rise in line with the current trends and reach 4C within the lifetime of many people.

UK consumers could face dramatically reduced food choices in the future unless much more is done to cut greenhouse gas emissions, a hard-hitting University of Manchester report warns.

The Sustainable Consumption Institute research claims food which families now take for granted, such as meat and fresh vegetables, could become too expensive for many if global temperatures rise in line with the current trends and reach 4C within the lifetime of many people.

Even if families continue to take steps to lower their carbon emissions from energy use, global farming emissions will continue to rise because of our growing appetite for energy-intensive foods and a rising demand to meet just basic living standards across the world.

Only by reducing consumption of energy, food, goods and services can we have a good chance of minimising the harmful effects of global warming, the report warns.

Should the temperature rise above 2C, consumers could find their shopping habits are radically altered. Most meats would soar in price, meaning families could have to adapt to a meat-free diets, the possibility of failing crops and staple food sources such as rice and wheat potentially being be devastated.

Globally, where non-carbon emissions such as those produced by agriculture make up around a quarter of total emissions -- compared to around 10% in the UK -- the picture is even more stark. Rice crops, for example, could be reduced by about 30% in the subcontinent in a '4C' world, leading to potential food shortages and hunger.

The two-year study, led by Dr Alice Bows from The University of Manchester, claims that while a smarter use of technology and some shifts in how and what people consume could prevent a rise to 4C, restricting the rise to just 2C is impossible without a significant contribution from changes to consumption.

The researchers calculated the emissions of all goods consumed in the UK; including foods produced overseas but eaten here. Most models only include goods produced in the UK, reducing the levels of emissions recorded.

Many climate experts believe a slight rise in UK temperatures would be beneficial for the farming industry as it yields could increase.

However, as temperatures continue to rise, farmers would need to use more and more fertiliser on their crops and some livestock would not be as productive. Both would lead to a further rise in greenhouse gas emissions.

Dr Bows and her team developed a series of scenarios, based on a +2C or a +4C future, each looking at different implications of climate change. More drastic options include the concepts of indoor farms, lab-grown meat and community cooking centres to replace kitchens and reduce emissions from industry and households.

She said: "The failure of the global community to turn rhetoric into reality and put meaningful policies in place to urgently cut emissions means that we are facing future temperature increases around 4C which will be devastating to agriculture and fundamentally alter food provision."

"If policymakers and scientists continue to take the complacent and precarious position that a 2C rise will be avoided, without taking necessary measures to cut emissions, we will have seriously misled those adapting to climate change. The consequence of which will most acutely affect the vulnerable in society."

"In countries like the UK, policymakers have focused so much on the CO2 emissions linked to energy, that agriculture and food has been overlooked. This report shows that agricultural emissions will be more challenging to cut, placing even greater pressure on the energy sector to decarbonise. "

"Much more emphasis needs to be placed on policies to cut agricultural emissions for there to be any reasonable chance of avoiding a 2C temperature rise"

"It is absolutely essential scientists and decision makers see the bigger picture. Climate change will likely raise the greenhouse gas emissions from agriculture. If Governments like the UK's want to take action to avoid a 2C temperature rise, they must reassess their targets to both take account of climate change impacts, and secondly, better understand how UK consumption is linked to the emissions right down global supply chains."

Commenting on the report, Peter Baker, Senior Scientist at non-profit organisation CABI, said: "The authors have vigorously engaged with a wide range of people -it was intriguing to be one of them -- as they strived to create some unnerving narratives. A dip into the report should start you thinking; the future won't be quite like any of the presented scenarios -- so where are we going, what will it be like, and why?"

Louise Neville, Sustainability Officer from Quorn Foods, added: "This report is impressive, as it has the potential to provoke a much needed wake up call to Government, industry and consumers alike -- all whilst remaining clear and accessible.

"There is much talk as to the serious challenges to be faced due to climate change but this report succinctly lays out the repercussions in real terms -- along with potential ways in which to respond.

"Put simply -- our consumption patterns need to become more sustainable. This is a challenge that the food industry can and should play a key leading role in. Regardless, the findings of the report are an essential insight for business."


Story Source:

The above story is based on materials provided by Manchester University. Note: Materials may be edited for content and length.


Cite This Page:

Manchester University. "Potential food crisis with global warming, UK scientists warn." ScienceDaily. ScienceDaily, 4 July 2012. <www.sciencedaily.com/releases/2012/07/120704021547.htm>.
Manchester University. (2012, July 4). Potential food crisis with global warming, UK scientists warn. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2012/07/120704021547.htm
Manchester University. "Potential food crisis with global warming, UK scientists warn." ScienceDaily. www.sciencedaily.com/releases/2012/07/120704021547.htm (accessed April 23, 2014).

Share This



More Science & Society News

Wednesday, April 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

UN Joint Mission Starts Removing Landmines in Cyprus

UN Joint Mission Starts Removing Landmines in Cyprus

AFP (Apr. 23, 2014) The UN mission in Cyprus (UNFICYP) led a mine clearance demonstration on Wednesday in the UN-controlled buffer zone where demining operations are being conducted near the Cypriot village of Mammari. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Air Force: $4.2B Saved from Grounding A-10s

Air Force: $4.2B Saved from Grounding A-10s

AP (Apr. 23, 2014) Speaking about the future of the United States Air Force, Chief of Staff Gen. Mark Welsh says the choice to divest the A-10 fleet was logical and least impactful. (April 23) Video provided by AP
Powered by NewsLook.com
Nuclear-Level Asteroids Might Be More Common Than We Realize

Nuclear-Level Asteroids Might Be More Common Than We Realize

Newsy (Apr. 23, 2014) The B612 Foundation says asteroids strike Earth much more often than previously thought, and are hoping to build an early warning system. Video provided by Newsy
Powered by NewsLook.com
High Court to Hear Dispute of TV Over Internet

High Court to Hear Dispute of TV Over Internet

AP (Apr. 22, 2014) The future of Aereo, an online service that provides over-the-air TV channels, hinges on a battle with broadcasters that goes before the U.S. Supreme Court on Tuesday. (April 22) Video provided by AP
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