| BBC: Sediment underneath an African lake, which is thought to date back more than 80,000 years, may help predict future climate change, researchers claim. Scientists from Aberystwyth, Bangor, St Andrews and Addis Ababa universities will drill about 75m (246ft) below Lake Tana in Ethiopia to test their theory. They said analysis of the sediment will show how the lake has changed and when there were droughts in the past. This could then help experts predict climate change, ... |