Results of a study on ice cores collected from tropical areas
For the first time, glaciologists compared elements found in ice cores taken from the Andes and the Himalayas to find out how the climate has changed, and is still changing, in tropical areas.
The National Science Foundation, Oceanic and Atmospheric Studies Administration and Ohio State University funded the research, said the university's press release on June 26.
The results of this work show a great cooling more than five thousand years ago and a more recent warming in the last fifty years.