In May 2011, two weeks before I was scheduled to start research in the region, a Mongol herder named Mergen was hit by a mining truck while protecting his pastureland in Xilingol, Inner Mongolia. He was dragged 140 feet and killed. His death sparked a month of protests.

The Global Maternal Newborn Health Conference, held in Mexico City from October 18-21, will provide a forum to identify, understand, and respond to the most urgent health needs of mothers and newborns. The hope is that it will accelerate momentum for maternal and newborn health in the newly adopted Sustainable Development Goals and put us on a track to end all preventable maternal and newborn deaths.

Food security and proper nutrition are essential elements for the good health and wellbeing of individuals and communities. Proper nutrition increases productivity and subsequently helps lift families out of poverty. However, an estimated 800 million people are chronically malnourished across the world. Globally, more than 3 million children die each year due to illnesses caused by malnutrition.

For all its flaws, the United Nations remains the only plausible forum for engaging broad global challenges like sustainable development. The most important environmental achievements of the past 40 years – the rise of environmental awareness, the birth of key ideas such as sustainability or the common heritage of humanity and the most important global treaties for environmental protection – all bear the UN stamp in one way or another. We could have added environmental human rights to that legacy last month, but we failed.

When war breaks out, what happens to the weather forecast? Violent conflict disrupts many essential services in developing countries and one of the most overlooked is meteorology, which has surprisingly big consequences for farmers, policymakers, and the aid workers who are there to help.

Water, energy, and demography – these were the themes of the most popular stories from last month. It seems natural resources and their consumption are on people’s minds.

The announcement in Washington on September 24 that President Xi Jinping is committing China to a national carbon trading system is the latest step in an important partnership between the two biggest carbon emitters in the world.

United States President Barack Obama invested four years and his top diplomats in containing Iran’s nuclear capabilities. He did this because an armed Iran is an existential threat to its neighbors, its region, and the world. Obama’s efforts in the talks stand in marked contrast to those geared toward addressing an even bigger and longer-term existential threat – containing climate change. The conditions that allow humans to survive, evolve, and thrive on earth are being compromised; radical changes in the climate promise a very uncertain future.