Did a volcanic eruption in Alaska help end the Roman republic?

Julius Caesar was assassinated on the Ides of March (March 15) in 44 BC and a bloody civil war followed. This brought down the Roman republic and replaced it with a monarchy led by Caesar's nephew Octavian, who in 27 BC became ...

Synchronizing food production can have disastrous effects

Crop failures are an important cause of food price spikes, conflict and food insecurity. The likelihood of local crop failures being catastrophic at the global level is exacerbated when they happen at the same time —that ...

New climate report is 'an immediate call to action'

On Friday, 13 federal agencies and the U.S. Global Change Research Program issued an exhaustive report that warns of the consequences of climate change in the United States. The culmination of years of research and analysis ...

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