The Bulletin's Science and Security Board announces that the minute hand of the Doomsday Clock remains at five minutes to midnight. In this open letter to US President Barack Obama, the Board highlights what initiatives in 2013 could help turn back the Clock.
Globalized trade allows water-poor countries to import food grown in water-rich countries, but climate change could disrupt this flow of "virtual water" and trigger food insecurity.
Does a warmer planet mean more wildfires? Not necessarily. But climate change does require humans to learn again how to co-exist with fire.
Many historical, political, and economic factors have contributed to the Syrian rebellion, but one remains largely unnoticed by the outside world -- the complex but powerful role that climate change has played in sparking the unrest.
Why failure to reduce carbon dioxide emissions significantly within the next decade will have large adverse effects on the climate -- and will be essentially irreversible on human timescales.
National security agencies see their militaries taking on additional roles in domestic disaster relief because of the effects of global climate change. Yet they are not expressing much urgency. Why?
While the system of space-based solar power offers the promise of unlimited, "green" electrical power, it also has immense potential as a geopolitical tool.
Needed: A new starting point for action on climate change, one that people with diverse views can agree upon.
Speth, co-founder of the Natural Resources Defense Council, says that green organizations, politicians, and the media are failing to address the root causes of climate change. He points to what he calls the "economic growth imperative" and argues for decoupling job growth from economic growth.
No prediction can be made today for Japan, but it is safe to project a sharply increased probability for a major earthquake on the broad, simple subduction-zone segments both north and south of the Tohoku rupture zone.
A combination of safer nuclear plants and much greater use of renewable energy could position Japan as a global leader in shifting toward a sustainable pathway with renewable sources.
Despite the well-known relationship between climate change and health, WHO has been only tangentially involved in major international climate efforts--a situation that must change.
By identifying specific historical cases where a changing climate contributed to social instability, we can learn a lot about what today's societies can do to cope with climate change.
Efforts to replace oil in the military services have been haphazard, what the Pentagon really needs is a comprehensive energy policy for the future.
While China continues to rely predominantly on coal-generated power, Beijing has made impressive gains in alternative energy and efficiencies.
India may not be responsible for the high greenhouse gas emissions causing climate change, but that's no reason for New Delhi to cling to poor energy policies.
Ethanol production is growing exponentially, but firefighters' ability to respond to emergencies involving alternative fuels hasn't kept pace.