Africa is witnessing a period of impressive economic transformation. Small business growth and technological innovation are bridging the development divide and lifting many out of poverty. Foreign investment has been pouring into the continent, viewed by analysts as one of the few remaining emerging market economies. Google's Eric Schmidt recently traveled to Africa on a technology tour citing Kenya's impressive gains in the ICT sector.

But the headlines and statistics fail to account for the large number left behind in the continent's race to develop. Social problems continue to plague African societies and threaten to reignite tensions, stalling long-term progress.

To address these challenges, grassroots leaders are working across Africa to introduce new models and practices to give voice and representation to marginalized groups, many of which include: women, children, and rural populations.

Referred to as "social entrepreneurs" these individuals work in partnership with local communities to use non-conventional approaches and innovative designs to address development challenges. Unlike traditional business entrepreneurs, their goal is not financial profit but societal gain.

In an effort to harness the collective expertise of these global change-makers, Stanford University's Program on Social Entrepreneurship was launched in 2011 to bring practitioners inside the classroom and on campus.

In April, three social entrepreneurs working to advance social, economic, and political change in Africa will spend the spring quarter in residency at the Center on Democracy, Development, and the Rule of Law.

Turning justice on its head

After emerging from a decade-long civil war, Sierra Leone has been cited as a successful model of post-conflict development and stability. However, the formal justice system has continued to exclude large numbers of the country's rural population who continue to seek customary legal systems of representation. Recognizing this problem, Simeon Koroma co-founded Timap (which translates to "Stand Up" in the national Krio language) for Justice in 2003 to combine the best of both systems.

Through a network of highly trained paralegals and mediators located in 19 offices across Sierra Leone, Timap for Justice is helping clients navigate both systems to seek justice and address community-level concerns. To date, Timap for Justice has represented over 20,000 clients who are often the victims of human rights abuses at the hands of multinational corporations. Their innovative grassroots justice model together with Koroma's efforts to grow the organization has led Timap for Justice to be recognized on a national and regional level.

Transforming ripples into waves

Gemma Bulos - a California native - did not know the impact water would have on her life until she witnessed the world water crisis first-hand while traveling the world on a global peace campaign. A self described "accidental social entrepreneur," Bulos learned by actively listening to the needs of the local community and learning from their experiences. She co-founded A Single Drop for Safe Water in the Philippines to empower local communities to plan, implement, and manage community-driven water and sanitation solutions.

Recognizing the important role women play in the success of water projects, Bulos started her second entrepreneurial venture - the Global Women's Water Initiative (GWWI) - to work with rural women in East Africa to build simple water and sanitation technologies. Tailoring each project to the community's needs, GWWI equips women with the technical skills to build rainwater harvesting tanks, water treatment technologies, and toilets. All projects are constructed using locally appropriate and affordable technologies. Trainings have helped to spur micro-enterprise development, and have provided over 15,000 people with clean water and sanitation solutions.

Putting children's rights first

Malawi made international headlines as the destination for pop singer Madonna's adoption of two young children, but the country has made little progress in protecting the rights of their youngest citizens. Maxwell Matewere founded the organization, Eye of the Child, to advocate for children who are victims of forced marriage, child labor, abuse, and sexual exploitation.

Matewere's innovative model uses litigation, public and policy advocacy, and training of community organizations to lead national campaigns against child abuse. Since 2010, the organization has provided free legal aid to 47 cases of forced marriages, 13 cases of arranged marriages, and rescued 21 children from early marriages.

Through his work leading Eye of the Child, Matewere has challenged powerful actors in business and government to advocate for new practices and legislation to protect the interests and well-being of young children. In recognition of his work, Matewere was appointed as Malawi's special law commissioner to develop a national policy for anti-human trafficking and adoption.

Informing theory with practice

During the spring quarter, the three social entrepreneurs will participate in an undergraduate course (IR142) examining how social entrepreneurs advance democracy, development, and justice. Taught by Kathleen Kelly Janus, a lecturer at Stanford, the course will combine academic theory with the social entrepreneurs practical experience to present a more inclusive model of social change. Students will also be encouraged to partner with social entrepreneurs on service learning projects.

Social entrepreneurs will engage the broader Stanford community through a series of speaking roles on campus during the academic quarter. They will also have the time and space to pursue their own research initiatives, contemplate the next steps on their journey as social change leaders, and document their own models of social change.

CDDRL's Program on Social Entrepreneurship was founded in 2011 by Kavita Ramdas, the former head of the Global Fund for Women and the current representative of the Ford Foundation in India. The program is now led by Faculty Director Deborah L. Rhode, a professor of law at Stanford Law School and affiliate faculty member at CDDRL.

This spring marks the third cycle of the program, which has welcomed previous social entrepreneurs from Bosnia-Herzegovina, Malaysia, Palestine, South Africa, and the San Francisco Bay Area, who together work on critical problems of democracy, development, and social justice in their communities.

For more information on the program, please visit: pse.stanford.edu.

We have read the headline a number of times now warning us that increasing temperatures are threatening global crop production. One need only to recall the drought and heat wave that hit the mid-western United States last summer, damaging corn and soybean production. Higher temperatures are certainly part of the problem, but a new study led by FSE associate director David Lobell finds its impacts in the U.S. are more indirect. Water stress may be the main culprit.

To validate this hypothesis and to help differentiate the different mechanisms impacting crop yields at higher temperatures, the research team used a model known as an Agricultural Production Systems Simulator (APSIM). High temperatures had a strong negative effect on corn yield response in the United States, in agreement with the data, but the predominate effect of heat in the model was via increased water stress.

As temperatures increase, plants transpire more water into the atmosphere, just as people sweat more on hotter days. With more hot days, the corn plant finds it harder to maintain growth rates, and at the same time loses more water, which sets up the risk of even more drought stress later in the season.

“APSIM computes daily water stress as the ratio of water supply to demand, and during the critical month of July this ratio is three times more responsive to 2 ºC warming than to a 20 percent precipitation reduction,” writes Lobell and co-authors in a new paper published in Nature Climate Change. “Water stress during July is particularly important for overall biomass growth and final yield, with July being the month with the most total biomass growth.”

Direct heat stress on the plant, such as happens on extremely hot days, played a more minor role in determining final yield. The study suggests that increased CO₂ may reduce crop sensitivity to extreme heat by increasing water use efficiency, but gains are likely to be no more than 25 percent.

“The APSIM model has been valuable in its ability to discriminate the importance of these factors,” said Lobell. “Models like these are useful for guiding efforts to develop crops with greater tolerance to increased temperatures, an important component of most adaptation strategies in agriculture, and helping to identify which processes are critical for modeling efforts to consider when projecting climate change impacts.”

The researchers project sensitivity to extreme heat will remain a severe constraint to crop production in the foreseeable future, especially as the region warms. They are now using the models to evaluate different strategies for developing new varieties of corn that can better handle the heat.

He broke the news to the world that North Korea had built a modern uranium enrichment plant. He’s helped the Russians secure their vast stockpile of ex-Soviet fissile materials. And Stanford students routinely rank him as one of their favorite professors. 

Siegfried Hecker, one of he world’s top nuclear scientists and co-teacher of the popular course, “Technology and National Security,” has completed his five-year tenure as co-director of the Center for International Security and Cooperation (CISAC).

Though Hecker is stepping down from the leadership role, he’s not walking away.

“He’s not going anywhere,” emphasized his successor, Stanford microbiologist and biosecurity specialist, David Relman, as he opened a seminar in Hecker’s honor on Feb. 25. The panel discussion, “Three Hard Cases: Iran, North Korea and Pakistan” featured Scott Sagan, Malfrid Braut-Hegghammer, Abbas Milani, Robert Carlin and Feroz Khan.

“He’ll be back this summer with his infectious energy and unswerving dedication for which he is so well known,” Relman said.

Hecker, 69, is taking a sabbatical in New Mexico – where he was director of the Los Alamos National Laboratory for more than a decade before coming to Stanford – and then at the Vienna Center for Disarmament and Non-Proliferation, run by the Monterey Institute of International Studies. He’ll continue work on his book about his historic efforts to foster collaboration between U.S.-Russian nuclear labs and do some travel to meet his nonproliferation counterparts in other parts of the world.

“CISAC is part of my heart and soul now,” Hecker told a reception in his honor after the seminar. “Los Alamos was in my blood and bones. Today, Stanford is part of that too.”

Hecker will return to CISAC this summer to resume his writing and research projects as a senior fellow at CISAC and its umbrella, the Freeman Spogli Institute for International Studies (FSI). He’ll head back to the classroom as well.

“What I found out is that teaching is so much harder than just giving a lecture, because you really have to pay attention to what the students have actually absorbed,” Hecker said. “You need to be able to communicate with each and every one of them.”

Among the many national honors that Hecker has received over the years, the one he treasures most is the 2010 Eugene L. Grant Award for Excellence in Undergraduate Teaching, an honor voted on by the students.

Lauren Cipriano, a Ph.D. candidate in Mechanical Science and Engineering, has been Hecker’s teaching assistant for four years. She noted his class co-taught with former Secretary of Defense William J. Perry – also a senior FSI fellow and CISAC faculty member – is routinely attended by hundreds of students and rated among the best.

“He shares his own stories of how developing personal relationships with Russian nuclear scientists in the wake of the Cold War helped overcome diplomatic challenges, and how he continues those efforts today in Russia and North Korea to make the world a safer place,” she said in her reception toast. “Sig also has a scary ability to predict the future. Several times our policy paper assignments have nearly come true.”

One of those dramatic examples unfolded in 2010. While the students were writing a paper about how they would respond to the discovery that North Korea had established a uranium enrichment facility, Sig was traveling to Pyongyang.

“Our students were some of the first to hear the stunning news of the uranium enrichment facilities the North Koreans revealed to him on his trip,” she said. “The students couldn’t have been more excited to feel like insiders in the national security policy arena.”

Hecker said he is particularly proud of the bright young scientists who have come through as CISAC fellows during his tenure.

“I think we’ve been able to build a really strong science component to support CISAC’s mission of building a safer world,” Hecker said. “We’ve been able to attract a lot of very good young scientists and then send them on to good careers from here.”

He said that working with these pre- and postdoctoral fellows and visiting faculty and scholars from the life sciences and political sciences “has helped me to better understand how important it is to bring the technical and social sciences together when looking at problems of international security.”

Hecker, who moved to the United States with his family from Austria when he was a boy, received his Ph.D. in metallurgy from Case Western Reserve University and began his professional career as a senior research metallurgist with the General Motors Research Laboratories in 1970. He joined the Los Alamos National Laboratory in 1973, became its director in 1986 and served for more than a decade.

Hecker came to CISAC in 2005 as a visiting professor, having been recruited by Sagan, who was then the social science co-director of CISAC.

“Sig first became involved with CISAC when he was still at Los Alamos, through participating in our Track II nuclear diplomacy efforts with John Lewis in North Korea and with me in a Five Nations project meeting in Thailand,” recalled Sagan. The Five Nations Project on Asian Regional Security and Economic Development focused on new challenges to nuclear nonproliferation by the U.S., China, Russia, India and Pakistan.

“I first broached the possibility of his coming to Stanford as a visiting professor when he and I were in the back seat of a taxi in Bangkok after giving a joint lecture at the Royal Thai Military Academy,” in July 2004, Sagan said. “He has been a stellar leader and now that he is stepping down from administrative responsibilities, he will have even more time to be involved in CISAC’s nuclear nonproliferation activities around the globe."

CISAC co-director, Tino Cuéllar, called himself a “charter member of the national federation of the Sig Hecker fan club.”

“In his eventful, five-year tenure, Sig has been an extraordinary leader,” Cuéllar said. “He’s been a visionary about its future, an endlessly enthusiastic supporter of its varied missions and a role model of excellence combined with the collegiality that CISAC prizes so dearly.