Zika is a global health challenge. Since its outbreak in Brazil last May, the virus has spread to more than 30 countries and territories and ignited global discourse about family planning, vaccine development, reproductive rights, contraceptive security, and even gender norms.

Post-war countries are among the most difficult policy arenas. The challenge is not only to stop violence and prevent violence from rekindling, but moreover to help countries reset their internal relations on a peaceful path. Increasingly, researchers and practitioners are interested in the potential of natural resources in post-war settings in the hope that good governance and sustainable management can contribute to this reset. Indeed, the international community acknowledged the relevance of the link between peaceful societies and environmental issues by including both in the Sustainable Development Goals.

Africa has its share of challenges, but it also leads the way in creative development responses. Take the Lake Tanganyika area in Tanzania. Daily life is hard. There are few roads. Cellphone service is patchy. You must travel by boat for seven hours to reach the nearest hospital. And if you have an obstetric emergency, there is no doctor in the village to help you.

It’s hard to imagine today, but Kabul was once ringed with grassy areas and shrubs, a few trees in areas too. Some of my husband’s favorite recollections of early 1970s Afghanistan are of simple family picnics in picturesque parks. Hours of lounging, grilling kebab, preparing rice, and conversing were a respite from the oppressive heat of the capital. Sometimes a picnic would become an all-night, extended family gathering. The Gardens of Paghman were a favorite destination with rows of pine trees, roses, and cool fountains. Pre-war family photos reveal neatly trimmed trees, bushes, and ample grassy areas for impromptu games. The family picnic is still popular among the Afghan diaspora. In the United States, Afghan community events are often held in parks, and involve large, multi-family picnics.

Migration is an important strategy for coping with environmental variability and change, but it can also place additional stress on ecosystems. Policymakers and practitioners are not always fully aware of these threats, nor fully prepared to manage them through appropriate interventions. Conservation professionals in the field therefore have a key role to play in reducing the harmful impacts that migration can have on the environment, and in mitigating any tensions that may emerge between migrant and host communities.

Since its adoption after COP-21 in December 2015, the Paris Agreement has received mixed reviews. Some stakeholders, mostly industrialized countries, see the climate deal as a success. Developing countries have generally been more cautiously optimistic, welcoming the agreement as the best option under the circumstances.

The year is 2022. Strong El Niño and La Niña events in successive years have drastically reduced wheat yields in India and Australia and increased the range of certain pests and plant pathogens in the Western Hemisphere. Moreover, a drought across North America has reduced corn and soybean yields significantly. Global commodity prices are up 262 percent over long-term averages. These price increases are compounding other social and economic challenges, contributing to social unrest in several food-importing nations.

Climate change is the world’s greatest environmental threat. It is also increasingly understood as a threat to domestic and international peace and security – recognized by the Department of Defense as a “threat multiplier,” by Secretary of State John Kerry as “perhaps the world’s most fearsome weapon of mass destruction,” and by President Obama, in an address to graduates of the United States Military Academy, as “a creeping national security crisis.” The Supreme Court’s temporary blocking of the Clean Power Plan highlights the Federal-State divide over how to address climate change, but because of its national security dimension, climate change also raises unique separation of powers issues between the president and Congress with regard to how the military can respond.