Ancient volcanic eruption destroyed the ozone layer

A catastrophic drop in atmospheric ozone levels around the tropics is likely to have contributed to a bottleneck in the human population around 60 to 100,000 years ago, an international research team has suggested. The ozone ...

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 ...

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