Sustainable development
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Nicole Feldman
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In a shack that now sits below sea level, a mother in Bangladesh struggles to grow vegetables in soil inundated by salt water. In Malawi, a toddler joins thousands of other children perishing from drought-induced malnutrition. And in China, more than one million people died from air pollution in 2012 alone.

Around the world, climate change is already having an effect on human health.

In a recent paper, Katherine Burke and Michele Barry from the Stanford Center for Innovation in Global Health, along with former Wellesley College President Diana Walsh, described climate change as “the ultimate global health crisis.” They offered recommendations to the new United States president to address the urgently arising health risks associated with climate change.

gettyimages 451722570 Bangladeshi children make their way through flood waters.

The authors, along with Stanford researchers Marshall Burke, Eran Bendavid and Amy Pickering who also study climate change, are concerned by how little has been done to mitigate its effects on health.

“I think it’s likely that health impacts could be the most important impact of climate change,” said Marshall Burke, an assistant professor of earth system science and a fellow at the Freeman-Spogli Institute for International Studies.

There is still time to ease — though not eliminate — the worst effects on health, but as the average global temperature continues to creep upward, time appears to be running short.

“I think we are at a critical point right now in terms of mitigating the effects of climate change on health,” said Amy Pickering, a research engineer at the Woods Institute for the Environment. “And I don’t think that’s a priority of the new administration at all.”

Health effects of climate change

Even in countries like the United States that are well-equipped to adapt to climate change, health impacts will be significant.

“Extremes of temperature have a very observable direct effect,” said Eran Bendavid, an assistant professor of medicine and Stanford Health Policy core faculty member.

“We see mortality rates increase when temperatures are very low, and especially when they are very high.”

Bendavid also has seen air pollutants cause respiratory problems in people from Beijing to Los Angeles to villages in Sub-Saharan Africa.

“Hotter temperatures make it such that particulate matter and dust and pollutants stick around longer,” he said.

In addition to respiratory issues, air pollution can have long-term cognitive effects. A study in Chile found that children who are exposed to high amounts of air pollution in utero score lower on math tests by the fourth grade.

“I think we’re only starting to understand the true costs of dirty air,” said Marshall Burke. “Even short-term exposure to low levels can have life-long effects.”

Low-income countries like Bangladesh already suffer widespread, direct health effects from rising sea levels. Salt water flooding has crept through homes and crops, threatening food sources and drinking water for millions of people.

“I think that flooding is one of the most pressing issues in low-income and densely populated countries,” said Pickering. “There’s no infrastructure there to handle it.”

Standing water left over from flooding is also a breeding ground for diseases like cholera, diarrhea and mosquito-borne illnesses, all of which are likely to become more prevalent as the planet warms.

On the flip side, many regions of Sub-Saharan Africa — where clean water is already hard to access — are likely to experience severe droughts. The United Nations warned last year that more than 36 million people across southern and eastern Africa face hunger due to drought and record-high temperatures.

Residents may have to walk farther to find water, and local sources could become contaminated more easily. Pickering fears that losing access to nearby, clean water will make maintaining proper hygiene and growing nutritious foods a challenge.

Flow Chart detailing how Climate CHnage Affects Your Health Climate change will affect health in all sectors of society.

All of these effects and more can also damage mental health, said Katherine Burke and her colleagues in their paper. The aftermath of extreme weather events and the hardships of living in long-term drought or flood can cause anxiety, depression, grief and trauma.

Climate change will affect health in every sector of society, but as Katherine Burke and her colleagues said, “….climate disruption is inflicting the greatest suffering on those least responsible for causing it, least equipped to adapt, least able to resist the powerful forces of the status quo.

“If we fail to act now,” they said, “the survival of our species may hang in the balance.”

What can the new administration do to ease health effects?

If the Paris Agreement’s emissions standards are met, scientists predict that the world’s temperature will increase about 2.7 degrees Celsius – still significant but less hazardous than the 4-degree increase projected from current emissions.

The United States plays a critical role in the Paris Agreement. Apart from the significance of cutting its own emissions, failing to live up to its end of the bargain — as the Trump administration has suggested — could have a significant impact on the morale of the other countries involved.

“The reason that Paris is going to work is because we’re in this together,” said Marshall Burke. “If you don’t meet your target, you’re going to be publicly shamed.”

The Trump administration has also discussed repealing the Clean Power Plan, Obama-era legislation to decrease the use of coal, which has been shown to contribute to respiratory disease.

“Withdrawing from either of those will likely have negative short- and long-run health impacts, both in the U.S. and abroad,” said Marshall Burke.

Scott Pruitt, who was confirmed today as the head of the Environmental Protection Agency (EPA), is expected to carry out Trump’s promise to dismantle environment regulations.

Despite the Trump administration’s apparent doubts about climate change, a few prominent Republicans do support addressing its effects.

Secretary of State Rex Tillerson, the former chairman and CEO of Exxon Mobile, supports a carbon tax, which would create a financial incentive to turn to renewable energy sources. He also has expressed support for the Paris Agreement. It is possible that as secretary of state, Tillerson could help maintain U.S. obligations from the Paris Agreement, though it is far from certain whether he would choose to do so or how Trump would react.

More promising is a recent proposal from the Climate Leadership Council. Authored by eight leading Republicans — including two former secretaries of state, two former secretaries of the treasury and Rob Walton, Walmart’s former chairman of the board — the plan seeks to reduce emissions considerably through a carbon dividends plan.

gettyimages 613945168 Already an issue, malnutrition will increase with droughts in Sub-Saharan Africa.

Their proposal would gradually increase taxes on carbon emissions but would return the proceeds directly to the American people. Americans would receive a regular check with their portion of the proceeds, similar to receiving a social security check. According to the authors, 70 percent of Americans would come out ahead financially, keeping the tax from being a burden on low- and middle-income Americans while still incentivizing lower emissions.

“A tax on carbon is exactly what we need to provide the right incentives and induce the sort of technological and infrastructure change needed to reduce long-term emissions,” said Marshall Burke.

Pickering added, “This policy is a ray of hope for meaningful action on climate.”

It remains to be seen whether the new administration and congress would consider such a program.

What can academics do to help?

Meanwhile, academics can promote health by researching the effects of climate change and finding ways to adapt to them.

“I think it’s fascinating that there’s just so little data right now on how climate change is going to impact health,” said Pickering.

Studying the effects of warming on the world challenges traditional methods of research.

“You can’t create any sort of experiment,” said Bendavid. “There’s only one climate and one planet.”

The scholars agree that interdisciplinary study is a critical part of adapting to climate change and that more research is needed.

“If ever there was an issue worthy of a leader’s best effort, this is the moment, this is the issue,” said Katherine Burke and her colleagues. “Time is short, but it may not be too late to make all the difference.”

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Recent reviews of dietary intake data from Benin showed that recommended daily intakes of key micronutrients, such as vitamin A and Fe, were not met( – ). At the sub-national level, in northern Benin, macronutrient intakes are also too low( ). Lack of dietary diversity is a particularly severe problem in Benin where diets are based predominantly on starchy staples with little or no animal products and few fresh fruits and vegetables( ). According to the last Demographic and Health Survey (DHS) carried out in 2012, only 28 % of rural children satisfied the minimum diversity criterion of eating at least four out of seven food groups and 14 % consumed the minimum acceptable diet. In addition, the prevalence of stunting, wasting and underweight was respectively 40, 5 and 19 % among children aged 6–59 months, while 9 % of rural women had chronic energy deficiency (BMI<18·5 kg/m2)( ). To improve the nutrition situation of women and children in Benin, the Ministry of Health has undertaken several interventions through its Strategic Plan for Food and Nutrition Development, comprising the supplementation of three major nutrients (vitamin A, Fe and iodine) and other promotive activities, such as exclusive breast-feeding, appropriate complementary feeding, and improved maternal and child nutrition( ).

Despite the efforts of the line ministry and its stakeholders, Beninese women aged 15–49 years (41 %) and children aged 6–59 months (58 %) are significantly affected by anaemia with greater prevalence in rural areas( ). Other nutritional data, such as Fe and vitamin A status, however, were not documented in the Benin 2012 DHS. In the 2006 Benin DHS, vitamin A deficiency (VAD) as measured by serum retinol <20 μg/dl was estimated to affect 66·0 % of children aged 12–71 months while the prevalence of night blindness was 11·8 % among pregnant women( ). The few studies of micronutrient deficiencies among rural populations were conducted in specific localized groups and revealed greater prevalence rates of VAD among 12–71 month-old children (82 %) and pregnant women (14 %) in northern Benin( ), while 33–49 % of children under 5 years of age were Fe deficient( 10 ). Until now, to our knowledge, there have been no population-based studies permitting generalization about the epidemiology of anaemia and its principal determinants in non-pregnant women, despite the problem being among the top ten causes of morbidities in the country( 11 12 ). The only study that identified anaemia risk factors among Beninese children was carried out in 2007 and found that incomplete immunization, stunted growth, recent infection, absence of a bednet, low household living standard, low maternal education and low community development index increased the risk of anaemia( 13 ).

As such, identifying the magnitude of anaemia and deficiencies of Fe and vitamin A and their determinants in high-risk groups, such as women of childbearing age and children, is essential for evidence-based intervention modalities, particularly in rural areas, where women and children may suffer not only from micronutrient deficiencies but also a shortage of food( 14 ). The present study is a very important step forward to avail of evidence-based information on the distribution of anaemia and micronutrient deficits and their predisposing diet and health factors among rural women and children in northern Benin. It will help understand the contemporary health profile of the rural populations of the study area in terms of dietary, socio-economic and environmental factors.

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Public Health Nutrition
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Halimatou Alaofè
Jennifer Burney
Rosamond L. Naylor
Douglas Taren
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China’s 13th Five-Year Plan, launched in March 2016, provides a sound policy platform for the protection of marine ecosystems and the restoration of capture fisheries within China’s exclusive economic zone. What distinguishes China among many other countries striving for marine fisheries reform is its size—accounting for almost one-fifth of global catch volume—and the unique cultural context of its economic and resource management. In this paper, we trace the history of Chinese government priorities, policies, and outcomes related to marine fisheries since the 1978 Economic Reform, and examine how the current leadership’s agenda for “ecological civilization” could successfully transform marine resource management in the coming years. We show how China, like many other countries, has experienced a decline in the average trophic level of its capture fisheries during the past few decades, and how its policy design, implementation, and enforcement have influenced the status of its wild fish stocks. To reverse the trend in declining fish stocks, the government is introducing a series of new programs for sustainable fisheries and aquaculture, with greater traceability and accountability in marine resource management and area controls on coastal development. As impressive as these new plans are on paper, we conclude that serious institutional reforms will be needed to achieve a true paradigm shift in marine fisheries management in China. In particular, we recommend new institutions for science-based fisheries management, secure fishing access, policy consistency across provinces, educational programs for fisheries managers, and increasing public access to scientific data.

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PNAS
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Ling Cao
Rosamond L. Naylor
Shuanglin Dongd, Arthur Hansone, Bo Huangf, Duncan Leadbitterg, David C. Littleh, Ellen K. Pikitchi, Yongsong Qiuj, Yvonne Sadovy de Mitchesonk, Ussif Rashid Sumailal, Meryl Williamsm, Guifang Xuen, Yimin Yeo, Wenbo Zhangp, Yingqi Zhouq, Ping Zhuangr
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Stanford researchers view ocean management as next front for China to compete as global sustainability leaders.

As global fish stocks continue sinking to alarmingly low levels, a joint study by marine fisheries experts from within and outside of China concluded that the country’s most recent fisheries conservation plan can achieve a true paradigm shift in marine fisheries management – but only if the Chinese government embraces major institutional reform.

The researchers, led by Stanford University’s Ling Cao and Rosamond Naylor, published their perspective piece “Opportunity for Marine Fisheries Reform in China,” in the Proceedings of the National Academy of Sciences of the United States of America.

The researchers examined the history of Chinese government priorities, policies, and outcomes related to marine fisheries since China’s 1978 Economic Reform, and examined how its leaders’ agenda for “ecological civilization” could successfully transform marine resource management in the coming years.

“The goal of our research was to explore the opportunities for marine fisheries reform in China that arise from their 13th Five-Year Plan and show how the best available science can be used in the design and implementation of fisheries management in China's coastal and ocean ecosystems,” said Cao, a Research Scholar with Stanford’s Center on Food Security and the Environment (FSE) and Shanghai Jiao Tong University.

The most recent plan provides a policy platform for the protection of marine ecosystems and the restoration of fisheries within China’s exclusive economic zone – an area of coastal water and seabed to which China claims exclusive rights for fishing, drilling, and other economic activities. They found that while China has attempted to reverse the trend of declining fish stocks in the past, serious institutional reforms are needed to achieve a true shift in marine fisheries management. The authors recommend new institutions for science-based fisheries management, secure fishing access, policy consistency across provinces, educational programs for fisheries managers, and increasing public access to scientific data.

The paper emphasizes the cultural norms that underpin China’s fisheries management – norms that are often overlooked and misunderstood by Western scientists. “China will follow its own cultural norms in governing its fisheries resources,” observed Roz Naylor, FSE Director and William Wrigley Professor in Earth System Science at Stanford University. “Understanding cultural differences will promote a stronger international community in marine science and sustainable fisheries management.”

As China accounts for almost one-fifth of global catch volume, it has made great efforts to carry out conservation and management of fisheries resources by adopting and practicing various measures over the past three decades. The government is introducing a series of new programs for sustainable fisheries and aquaculture, with greater traceability and accountability in marine resource management and area controls on coastal development. The most recent plan notably includes marine ecosystem protection as a significant component of the central government’s environmental agenda.

The timing of this research comes at a unique phase in China’s fisheries conservation strategy as they recently introduced specific goals for both the Ocean and Fisheries Five-Year Plans. “The Chinese government is poised to take serious action on marine ecosystem management,” Cao said. “Time is of the essence.”

Although the paper’s authors view China’s efforts as a signal of dedication toward furthering fisheries conservation, they hope their perspective paper helps highlight the need for true institutional reform in order to see the Chinese government’s goals realized.

 “Fisheries management and resource conservation is a complex undertaking. To rebuild China's depleted fisheries, serious institutional reforms are needed. The road ahead is still long,” said co-author Yingqi Zhou from Shanghai Ocean University.

 

Ling Cao is a research scholar with the Center on Food Security and the Environment, and a faculty member of the Institute of Oceanography at Shanghai Jiaotong University.

Rosamond Naylor is the director of the Center on Food Security and the Environment, William Wrigley Professor of Earth System Science at Stanford and a senior fellow at the Freeman Spogli Institute for International Studies.

The translated Chinese version titled "Marine Fisheries Reform in Our Country: Review and Recommendations" can be found at China Ocean News.

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Joann de Zegher is one of nine selected as a SAWIT Challenge Finalist. She will be pitching her sustainable palm oil solution in Jakarta, Indonesia November 17-18, 2016.

FSE is excited to announce that graduate student, Joann de Zegher, is one of the nine innovators chosen in the SAWIT Challenge to pitch her solution to help independent smallholder farmers produce palm oil sustainably. She will present her idea to international businesses, government, and NGO leaders in Jakarta, Indonesia November 17-18, 2016.

The nine finalists submitted their ideas to solve the biggest challenges facing independent smallholder palm oil farmers in Indonesia: financing, farming inputs and best practices, mapping and land tenureship, market information, as well as product traceability and transparency. The innovations are designed to make sustainable, more profitable palm oil production.

The SAWIT Challenge is run by Smallholders Advancing with Technology and Innovation (SAWIT), a partnership between the Oil Palm Smallholders Union, and the Indonesia Business Council for Sustainable Development, with support from the U.S. Agency for International Development.

De Zegher’s solution offers a substantial price incentive to smallholder farmers who comply with buyer sustainability policies, but only passes on a very small portion of the cost to buyers. The innovation leverages the simple fact that small farmers and large buyers have substantially different cash flow needs. It also helps to shorten and strengthen the palm supply chain from smallholder farmers to mill.

 

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India is one of the world's largest food producers, making the sustainability of its agricultural system of global significance. Groundwater irrigation underpins India's agriculture, currently boosting crop production by enough to feed 170 million people. Groundwater overexploitation has led to drastic declines in groundwater levels, threatening to push this vital resource out of reach for millions of small-scale farmers who are the backbone of India's food security. Historically, losing access to groundwater has decreased agricultural production and increased poverty. We take a multidisciplinary approach to assess climate change challenges facing India's agricultural system, and to assess the effectiveness of large-scale water infrastructure projects designed to meet these challenges. We find that even in areas that experience climate change induced precipitation increases, expansion of irrigated agriculture will require increasing amounts of unsustainable groundwater. The large proposed national river linking project has limited capacity to alleviate groundwater stress. Thus, without intervention, poverty and food insecurity in rural India is likely to worsen.

 

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Environmental Research Letters
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Esha Zaveri
Danielle S Grogan
Karen Fisher-Vanden
Steve Frolking
Richard B Lammers
Douglas H Wrenn
Alexander Prusevich
Robert E Nicholas
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It is widely recognized that an “African green revolution” will require greater use of inorganic fertilizers. Often-made comparisons note that fertilizer use rates in Africa are just 10–20% of those in Asia, Europe and the Americas. Most attempts to explain relatively low-adoption of fertilizer assume yield responses to inorganic fertilization warrant higher application rates and hypothesize that observed use rates are limited by market-based factors. Another explanation may be that application rates are low because African yields are less responsive to inorganic fertilizer than yields in other regions, and less responsive than analysts perceive. Examining the case of Zambia, we evaluate whether yield response to fertilizers could explain adoption and application rates. A model of yield response is constructed and a combination of estimators is employed to mitigate potential biases related to correlation between fertilizer use and unobserved heterogeneity as well as stochastic shocks. Results indicate higher fertilization rates would be marginally profitable or unprofitable in many cases given commercial fertilizer and maize prices. Phosphoric fertilizer is particularly unprofitable on acidic soils, which are common in Zambia and other areas of sub-Saharan Africa. We propose feasible recommendations for diversifying the current government strategy to enhance crop productivity.

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Agricultural Economics
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William J. Burke
Thom. S. Jayne
J. Roy Black
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