Food shortages could be most critical world issue by mid-century
2014-04-17
(Press-News.org) WASHINGTON, D.C. -- The world is less than 40 years away from a food shortage that will have serious implications for people and governments, according to a top scientist at the U.S. Agency for International Development.
"For the first time in human history, food production will be limited on a global scale by the availability of land, water and energy," said Dr. Fred Davies, senior science advisor for the agency's bureau of food security. "Food issues could become as politically destabilizing by 2050 as energy issues are today."
Davies, who also is a Texas A&M AgriLife Regents Professor of Horticultural Sciences, addressed the North American Agricultural Journalists meeting in Washington, D.C. on the "monumental challenge of feeding the world."
He said the world population will increase 30 percent to 9 billion people by mid-century. That would call for a 70 percent increase in food to meet demand.
"But resource limitations will constrain global food systems," Davies added. "The increases currently projected for crop production from biotechnology, genetics, agronomics and horticulture will not be sufficient to meet food demand."
Davies said the ability to discover ways to keep pace with food demand have been curtailed by cutbacks in spending on research.
"The U.S. agricultural productivity has averaged less than 1.2 percent per year between 1990 and 2007," he said. "More efficient technologies and crops will need to be developed -- and equally important, better ways for applying these technologies locally for farmers -- to address this challenge."
Davies said when new technologies are developed, they often do not reach the small-scale farmer worldwide.
"A greater emphasis is needed in high-value horticultural crops," he said. "Those create jobs and economic opportunities for rural communities and enable more profitable, intense farming."
Horticultural crops, Davies noted, are 50 percent of the farm-gate value of all crops produced in the U.S.
He also made the connection between the consumption of fruits and vegetables and chronic disease prevention and pointed to research centers in the U.S. that are making links between farmers, biologists and chemists, grocers, health care practitioners and consumers. That connection, he suggested, also will be vital in the push to grow enough food to feed people in coming years.
"Agricultural productivity, food security, food safety, the environment, health, nutrition and obesity -- they are all interconnected," Davies said.
One in eight people worldwide, he added, already suffers from chronic undernourishment, and 75 percent of the world's chronically poor are in the mid-income nations such as China, India, Brazil and the Philippines.
"The perfect storm for horticulture and agriculture is also an opportunity," Davies said. "Consumer trends such as views on quality, nutrition, production origin and safety impact what foods we consume. Also, urban agriculture favors horticulture."
For example, he said, the fastest growing segment of new farmers in California, are female, non-Anglos who are "intensively growing horticultural crops on small acreages," he said.
INFORMATION:
ELSE PRESS RELEASES FROM THIS DATE:
Internet use may cut retirees' depression
2014-04-17
Spending time online has the potential to ward off depression among retirees, particularly among those who live alone, according to research published online in The Journals of Gerontology, Series B: Psychological Sciences and Social Sciences. In the article "Internet Use and Depression Among Retired Older Adults in the United States: A Longitudinal Analysis," the authors report that Internet use reduced the probability of a depressed state by 33 percent among their study sample.
Late-life depression affects between 5 and 10 million Americans age 50 and older. This new ...
A cross-section of the universe
2014-04-17
An image of a galaxy cluster taken by the NASA/ESA Hubble Space Telescope gives a remarkable cross-section of the Universe, showing objects at different distances and stages in cosmic history. They range from cosmic near neighbours to objects seen in the early years of the Universe. The 14-hour exposure shows objects around a billion times fainter than can be seen with the naked eye.
This new Hubble image showcases a remarkable variety of objects at different distances from us, extending back over halfway to the edge of the observable Universe. The galaxies in this image ...
Researcher looks at public perceptions around newborn testing
2014-04-17
TORONTO, April 17, 2014—While 94 per cent of Canadians surveyed said they would participate in public health programs that screen newborns for a specific number of genetic conditions, only 80 per cent said they would be willing to participate in screening that would sequence their newborns' genomes.
Most newborns in North America have a "heel prick test" in their first day or two of life in which a tiny amount of blood is taken from their heels and tested for about five to 54 conditions, depending on the state or province. Some conditions commonly tested for include cystic ...
Adrenaline does little to increase patient's survival after cardiac arrest
2014-04-17
TORONTO, April 17, 2014— Giving patients adrenaline after they suffer a cardiac arrest outside of a hospital does not increase their prospects of surviving long-term, according to new research conducted at St. Michael's Hospital.
"The vast number of patients who have a cardiac arrest get adrenaline, which has been the drug recommended in treating cardiac arrest for decades," said Dr. Steve Lin, an emergency physician and trauma team leader at St. Michael's. "Yet, despite advances in medical treatment, long-term survival rates of patients who suffer a cardiac outside a ...
Animal study provides first evidence that gel can prevent multiple virus transmission in vagina/rectum
2014-04-17
NEW YORK (17 April 2014)— Population Council scientists and their partners have found that their proprietary microbicide gel is safe, stable, and can prevent the transmission of multiple sexually transmitted infections (STIs) in both the vagina and rectum in animals: HIV, herpes simplex virus 2 (HSV-2), and human papillomavirus (HPV). The USAID-funded study also provides the first data that the gel is effective against multiple strains of HIV, and has a window of efficacy in the vagina against all three viruses of at least eight hours prior to exposure. A Phase 1 safety ...
Wireless power transfer achieved at 5-meter distance
2014-04-17
Daejeon, Republic of Korea, April 17, 2014 – The way electronic devices receive their power has changed tremendously over the past few decades, from wired to non-wired. Users today enjoy all kinds of wireless electronic gadgets including cell phones, mobile displays, tablet PCs, and even batteries. The Internet has also shifted from wired to wireless. Now, researchers and engineers are trying to remove the last remaining wires altogether by developing wireless power transfer technology.
Chun T. Rim, a professor of Nuclear & Quantum Engineering at KAIST, and his team ...
Fear of the cuckoo mafia
2014-04-17
This news release is available in German. If a restaurant owner fails to pay the protection money demanded of him, he can expect his premises to be trashed. Warnings like these are seldom required, however, as fear of the consequences is enough to make restaurant owners pay up. Similarly, mafia-like behaviour is observed in parasitic birds, which lay their eggs in other birds' nests. If the host birds throw the cuckoo's egg out, the brood parasites take their revenge by destroying the entire nest. Consequently, it is beneficial for hosts to be capable of learning and ...
East African honeybees are safe from invasive pests… for now
2014-04-17
Several parasites and pathogens that devastate honeybees in Europe, Asia and the United States are spreading across East Africa, but do not appear to be impacting native honeybee populations at this time, according to an international team of researchers.
The invasive pests include including Nosema microsporidia and Varroa mites.
"Our East African honeybees appear to be resilient to these invasive pests, which suggests to us that the chemicals used to control pests in Europe, Asia and the United States currently are not necessary in East Africa," said Elliud Muli, senior ...
Drought and fire in the Amazon lead to sharp increases in forest tree mortality
2014-04-17
Ongoing deforestation and fragmentation of forests in the Amazon help create tinderbox conditions for wildfires in remnant forests, contributing to rapid and widespread forest loss during drought years, according to a team of researchers.
The findings show that forests in the Amazon could reach a "tipping point" when severe droughts coupled with forest fires lead to large-scale loss of trees, making recovery more difficult, said Jennifer Balch, assistant professor of geography, Penn State.
"We documented one of the highest tree mortality rates witnessed in Amazon forests," ...
Classifying cognitive styles across disciplines
2014-04-17
Educators have tried to boost learning by focusing on differences in learning styles. Management consultants tout the impact that different decision-making styles have on productivity. Various fields have developed diverse approaches to understanding the way people process information. A new report from psychological scientists aims to integrate these disciplines by offering a new, integrated framework of cognitive styles that bridges different terminologies, concepts, and approaches.
"This new taxonomy of cognitive styles offers a clear categorization of different types ...