Scientists are unravelling the environmental changes that took place around the Arctic during an exceptional episode of ancient global warming. Newly published results from a high-resolution study of sediments collected on Spitsbergen represent …
New analysis of sediment samples from the southern Caribbean indicate that severe droughts occurred at the same time as the known collapse of the Mayan civilization. In a study in the March 14 issue of the journal Science, researchers report that sediments from the Cariaco Basin in northern Venezuela clearly show a dry spell in the Caribbean region starting in the seventh century and lasting for more than 200 years.