Archaeologists said on Wednesday they have unearthed the oldest wooden structure ever discovered, dating from nearly half a million years ago, which suggests that our ancestors may have been more advanced than previously thought.Larry Barham, an archaeologist at the UK's University of Liverpool and the study's lead author, told AFP that to his knowledge the previous record-holder for oldest wooden structure dated back around 9,000 years.
A mile-thick ice sheet in Greenland vanished around 416,000 years ago during a period of moderate natural warming, driving global sea rise to levels that would spell catastrophe for coastal regions today, a study said Thursday.The team's modeling showed that the ice sheet melting would have caused between five and twenty feet of sea level rise at that time.