Figure 1 (IMAGE) Science China Press Caption Distribution patterns of the Asian-African-Australian monsoon regions (green) and arid regions (yellow) in five geological periods during the Cenozoic. (a) mid-Paleocene (~60Ma); (b) late-Eocene (~40Ma); (c) late-Oligocene (~25Ma); (d) late-Miocene (~10Ma); (e) present-day (0Ma). The blue shade represents oceans or lakes, and the grey outlines indicate the 1500m elevation contour of the Tibetan Plateau and its vicinity. Credit ©Science China Press Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.