Barren barley and wheat fields stretch across the dry landscape of northern Afghanistan, the result of persistent drought and flash flooding that has left thousands of people facing food shortages and loss of work.

From earthquakes to floods, when natural disasters strike, the military is often called on to bolster civilian responses. Policymakers throughout Latin America in particular are increasingly relying on the armed forces for emergency assistance.

Global climate trends indicate that our planet will continue warming into the next century, leading to more extreme climate conditions. The Latin America and Caribbean region is vulnerable to some of the most challenging aspects of climate change – sea-level rise, changes in precipitation, glacial melting, spreading of disease, and extreme weather events.

The Sundarbans – a collection of densely populated islands in India’s sprawling Ganges Delta – are so remote that the only way to get there is by boat. But human traffickers still manage to get in, and that’s left many families with missing daughters.

According to recent polling, climate change is seen as the single most threatening international challenge around the world, and there’s evidence that all that worry is taking a psychological toll. Adding to droughts, floods, extreme weather, and die-offs, psychologists are observing higher levels of anxiety, depression, and post-traumatic stress disorder in certain areas and professions. Even people who do not actively stress about global warming or view it as a major threat may still suffer psychological trauma from its effects.

An advisory released this August by the U.S. National Weather Service warned this year’s El Niño could be among the strongest ever recorded, lasting well into the first few months of 2016.

Ten years ago this month one of the United States’ deadliest and most costly storms, Hurricane Katrina, struck the Gulf Coast. In Louisiana, the storied city of New Orleans was dealt a particularly devastating blow. Hundreds died and the city suffered extensive damage as 80 percent of its neighborhoods flooded, prompting an exodus it is still recovering from.