The Stanford Center at Peking University (SCPKU), the Center on Democracy, Development and the Rule of Law (CDDRL), and the APARC China Program jointly hosted a workshop on China’s Belt and Road Initiative (BRI) in early March. The workshop, held on March 2 and 3, welcomed researchers from around the world with expertise in the Initiative. Unfortunately, because of the rapidly developing health emergency related to the coronavirus, participants from not only China, but also Japan, were prevented from attending. As described by Professor Jean Oi, founding director of SCPKU and the China Program, and Professor Francis Fukuyama, director of CDDRL and the Ford Dorsey Master's in International Policy, who co-chaired the workshop, the meeting aimed to provide a global perspective on the BRI, consolidate knowledge on this opaque topic, and determine the best method and resources for future research.  

The workshop began with presentations from several of the invited guests. Dr. Atif Ansar from the University of Oxford’s Saïd Business School kicked off the first day by describing not only the tremendous opportunity that the BRI presents to developing economies, but also the serious pitfalls that often accompany colossal infrastructure projects. Pointing out the poor returns on investment of mega infrastructure projects, Ansar examined the frequest cost and schedule overruns, random disasters, and environmental degradation that outweigh the minimal benefits that they generally yield. China’s own track record from domestic infrastructure projects does little to mitigate fear of these risks, Ansar claimed. In response, he urged professional management of BRI investments, institutional reforms, and intensified deployment of technology in BRI projects. Dr. Ansar was followed by Dr. Xue Gong of the S. Rajaratnam School of International Studies, Nanyang Technological University, Singapore. Dr. Gong’s analysis centered on the extent to which China’s geopolitical motivations influenced its outward foreign direct investments (OFDI). Although her research was still in the early stages, her empirical analysis of China’s OFDI inflows into fifty BRI recipient countries from 2007-2018 nevertheless revealed that geopolitical factors often outweigh economic factors when it comes to China’s OFDI destinations.

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Professor Curtis J. Milhaupt and Scholar-in-Residence Jeffrey Ball, both at Stanford Law School, followed with individual presentations on the role of State-Owned Enterprises (SOEs) in the BRI and the emissions impact of the BRI on climate change, respectively. Professor Milhaupt  characterized Chinese SOEs as both geopolitical and commercial actors, simultaneously charged with implementing Party policies and attaining corporate profits. Chinese SOEs are major undertakers of significant overseas BRI projects, acting not only as builders but also as investors, partners, and operators. This situation, Milhaupt asserted, carries significant risks for SOEs because these megaprojects often provide dismal returns, have high default rates, and can trigger political backlash in their localities. Milhaupt highlighted the importance of gathering firm-level data on businesses actually engaged in BRI projects to better infer geostrategic, financial, or other motivations. Jeffrey Ball turned the discussion to carbon emissions from BRI projects and presented preliminary findings from his four-country case studies. He concluded that, on aggregate, the emissions impact of the BRI is still “more brown than green.” Twenty-eight percent of global carbon emissions may be accounted for by BRI projects, Ball asserted, underscoring the importance of the BRI to the future of global climate change.

The day concluded with presentations by  Michael Bennon, Managing Director at the Stanford Global Projects Center, and Professor David M. Lampton, Oksenberg-Rohlen Fellow at the Freeman Spogli Institute for International Studies. Bennon first presented findings from two empirical case studies of BRI projects and then went on to describe how the BRI is now practically the “only game in town” for infrastructure funding for developing countries. Lengthy environmental review processes at Western multilateral banks have turned the World Bank, for example, from a lending bank into a “knowledge bank,” he argued. He also highlighted that, in general, economic returns on BRI projects for China are very poor, even though recipient countries may accrue macroeconomic benefits from these projects. Finally, Professor Lampton turned the discussion back to Southeast Asia, where China is currently undertaking massive cross-border high-speed rail projects through eight ASEAN countries. He described how each host country had varying capacity to negotiate against its giant neighbor, and how the sequential implementation of these cross-border rail projects also had varying impacts on the negotiating positions of these host countries. BRI played out differently in each country, in other words, eliciting different reactions, push-backs and negotiated terms.

The second day of the workshop was dedicated to working toward a collaborative approach to future BRI research. The group discussed the key gaps in the existing research, including how to know what China’s true intentions are, how to measure those intentions, who the main players and their interests in both China and the host countries are, and even what the BRI is, exactly. Some cautioned that high-profile projects may not be representative of the whole. Participants brainstormed about existing and future sources of data, and stressed the importance of diversifying studies and seeking empirical evidence.

Global warming and more days of extreme heat are exacerbating the health risks of pregnancy, particularly among African-American women, according to new Stanford-led research.

The maternal mortality rate among all women in the United States is already the worst of any industrialized nation. And black women are three to four times more likely to die from pregnancy-related problems than white women.

“It is truly a crisis that in America, one of the wealthiest countries in the world, more women are dying from pregnancy or childbirth complications than in any other developed country,” said Maya Rossin-Slater, a core faculty member at Stanford Health Policy and a faculty fellow at the Stanford Institute for Economic Policy Research.

In a new working paper published by the National Bureau of Economic Research, Rossin-Slater and two other health economists underscore how little research is out there about the impact of rising temperatures on the health of mothers and their newborns.

Pregnant women, for example, are not able to regulate body temperature as efficiently as non-pregnant individuals due to the physiological changes they undergo during gestation. Heat exposure can alter blood flow in the placenta, which can weaken the placenta and lead to complications. And high heat can lead to other pregnancy complications, such as hypertension, preeclampsia and prolonged premature rupture of membranes.

“All of these issues can translate into women needing to be hospitalized during pregnancy and experiencing complications during childbirth,” wrote Rossin-Slater, an assistant professor of health research and policy at Stanford Medicine. Her co-authors are Jiyoon Kim, assistant professor of economics at Elon University, and Ajin Lee, an assistant professor of economics at Michigan State University.

The researchers said most of the discussion about maternal health focuses on the health-care system, but that other determinants of poor maternal health and racial disparities are much less understood, particularly when it comes to how the environment is impacting pregnancy.

So they launched what they believe is the first study to identify the causal effects of prenatal exposures to extreme temperatures on the health of the mothers themselves.

As the Earth Warms, So Does Exposure to Extreme Heat

Their paper focuses on an environmental factor that is becoming increasingly relevant due to the growing consensus that climate change is contributing to a gradual warming of the earth: exposure to extreme heat.

The researchers studied the effects of exposure to extreme temperatures during pregnancy on maternal and child hospitalizations, using inpatient discharge records from three U.S. states with different climates: Arizona, New York and Washington. Their data comes from the State Inpatient Databases from the Healthcare Cost and Utilization Project, including 2.7 million inpatient records of 2.7 million infants and 2.2 million mothers in those three states.

And to measure temperature exposure, the researchers obtained data from the National Oceanic and Atmospheric Administration (NOAA).

For every county in their data, the researchers calculated the average temperature for every month. Then for every given day in a specific month in that county, they looked at the historic average for how high or low that day’s temperature was relative to the overall temperature in that month in that county.

For example, a 90-degree day in Arizona in September would not be classified as extreme heat since it’s relatively common. But a 90-degree day in New York would be, since temperatures that high are much less common. They classified “extreme heat” as a given day when the temperature is more than three standard deviations (3SD) above that historic county mean.

Then, they compared the outcomes of women who are of the same race giving birth in the same county and calendar month, but in different years. These women are likely similar in terms of their demographics and socioeconomic status, but may be exposed to different temperatures during pregnancy. For example, consider a black woman giving birth in November 2011 in Queens County, New York, and a black woman giving birth in November 2012 in the same county. If there were a heat wave in Queens in the August 2012, then the latter woman is exposed to more extreme heat during pregnancy than the former. 

The economists found that each additional day with heat that is at least 3SDs — or substantially higher than the historic county-month average — during the second trimester of pregnancy increases the likelihood that a newborn is diagnosed with dehydration by .008 percentage points.

“Our results provide new estimates of the health costs of climate change and identify environmental drivers of the black-white maternal health gap,” they wrote. “Understanding the health consequences of this increase in extreme heat is critical information for discussions about the costs of climate change and the possible benefits of mitigating policies.”

The researchers found that each additional day of extreme heat exposure during pregnancy increases black women’s likelihood of hospitalization during pregnancy. Since black women on average are exposed to more extreme heat than white women — due to different residence patterns and access to mitigating technologies like air conditioning — extreme heat may contribute to exacerbating the already large gap in maternal health between black and white women.

Detrimental Consequences of Rising Temperatures

Scientists predict global average temperatures will continue to rise over the next 50 to 100 years as greenhouse gases continue to trap more heat in the Earth’s atmosphere. The U.N. Intergovernmental Panel on Climate Change last year warned that nations worldwide must quickly reduce fossil fuel use to keep the rise in global temperatures below 1.5°C by 2050. 

The panel also said the number of days with mean temperatures above 32°C in the average American county is forecasted to increase from about 1 to 43 days per year by 2070-2099.

That could have detrimental consequences for babies and mothers alike.

“Overall, our findings on infant health suggest that exposure to extreme heat during the second trimester increases the likelihood of the baby being dehydrated at the time of birth,” the researchers wrote. “This, in turn, appears to increase the likelihood of subsequent readmission to the hospital many months later for causes linked to dehydration.”

And these impacts are typically missed when researchers only measure infant health using more standard variables, such as birth weight.

The authors note dehydration is one of the leading causes of morbidity and mortality in children. Studies show that children under 5 years old who have an average of two episodes of gastroenteritis associated with dehydration per year leads to 2 to 3 million pediatric office visits and accounts for 10% of all pediatric hospital admissions in the United States. 

Experts believe black women are three- to four-times more likely to die from pregnancy-related causes due to lack of access to and the poor quality of health care, as well as clinicians not monitoring black women as closely — or actually dismissing their symptoms altogether.

“The fact that the adverse impacts on health during pregnancy are larger for black than for white mothers suggests that climate change may exacerbate the already large racial gap in maternal health,” the researchers said.

By comparing historical temperature and suicide data, researchers found a strong correlation between warm weather and increased suicides. They estimate climate change could lead to suicide rate increases across the U.S. and Mexico.

Suicide rates are likely to rise as the earth warms, according to new research published July 23 in Nature Climate Change. The study, led by Stanford economist Marshall Burke, finds that projected temperature increases through 2050 could lead to an additional 21,000 suicides in the United States and Mexico.

Researchers have recognized for centuries that suicides tend to peak during warmer months. But, many factors beyond temperature also vary seasonally – such as unemployment rates or the amount of daylight – and up to this point it has been difficult to disentangle the role of temperature from other risk factors.

“Suicide is one of the leading causes of death globally, and suicide rates in the U.S. have risen dramatically over the last 15 years. So better understanding the causes of suicide is a public health priority,” Burke said.

Heat and suicide

To tease out the role of temperature from other factors, the researchers compared historical temperature and suicide data across thousands of U.S. counties and Mexican municipalities over several decades. The team also analyzed the language in over half a billion Twitter updates or tweets to further determine whether hotter temperatures affect mental well-being. They analyzed, for example, whether tweets contain language such as “lonely,” “trapped” or “suicidal” more often during hot spells.

The researchers found strong evidence that hotter weather increases both suicide rates and the use of depressive language on social media.

“Surprisingly, these effects differ very little based on how rich populations are or if they are used to warm weather,” Burke said.

For example, the effects in Texas are some of the highest in the country. Suicide rates have not declined over recent decades, even with the introduction and wide adaptation of air conditioning. If anything, the researchers say, the effect has grown stronger over time.

Effect of climate change

To understand how future climate change might affect suicide rates, the team used projections from global climate models. They calculate that temperature increases by 2050 could increase suicide rates by 1.4 percent in the U.S. and 2.3 percent in Mexico. These effects are roughly as large in size as the influence of economic recessions (which increase the rate) or suicide prevention programs and gun restriction laws (which decrease the rate).

Effects of historical temperature changes on suicide rates are shown for the U.S. and Mexico. (Image credit: Marshall Burke)

Effects of historical temperature changes on suicide rates are shown for the U.S. and Mexico. (Image credit: Marshall Burke)

“We’ve been studying the effects of warming on conflict and violence for years, finding that people fight more when it’s hot. Now we see that in addition to hurting others, some individuals hurt themselves. It appears that heat profoundly affects the human mind and how we decide to inflict harm,” said Solomon Hsiang, study co-author and associate professor at the University of California, Berkeley.

The authors stress that rising temperature and climate change should not be viewed as direct motivations for suicide. Instead, they point out that temperature and climate may increase the risk of suicide by affecting the likelihood that an individual situation leads to an attempt at self-harm.

“Hotter temperatures are clearly not the only, nor the most important, risk factor for suicide,” Burke emphasized. “But our findings suggest that warming can have a surprisingly large impact on suicide risk, and this matters for both our understanding of mental health as well as for what we should expect as temperatures continue to warm.”

Marshall Burke is also a fellow at the Center on Food Security and the Environment, Stanford Woods Institute for the Environment, Freeman Spogli Institute for International Studies, and Stanford Institute for Economic Policy Research. Solomon Hsiang is also a faculty research fellow at the National Bureau of Economic Research. Other Stanford co-authors include Sanjay Basu, assistant professor of medicine, and Sam Heft-Neal, research scholar at the Stanford Center on Food Security and the Environment. Additional co-authors are from Pontificia Universidad Católica de Chile, Vancouver School of Economics, and the University of California, Berkeley. The research was partially supported by the Stanford Woods Institute for the Environment.

The rising level of carbon dioxide in the atmosphere means that crops are becoming less nutritious, and that change could lead to higher rates of malnutrition that predispose people to various diseases.

That conclusion comes from an analysis published Tuesday in the journal PLOS Medicine, which also examined how the risk could be alleviated. In the end, cutting emissions, and not public health initiatives, may be the best response, according to the paper's authors.

Research has already shown that crops like wheat and rice produce lower levels of essential nutrients when exposed to higher levels of carbon dioxide, thanks to experiments that artificially increased CO2 concentrations in agricultural fields. While plants grew bigger, they also had lower concentrations of minerals like iron and zinc.

Read the entire story at NPR.