Climate & tools (IMAGE)

Science China Press

Climate & tools

Caption

Ecological, biological and stone tool information from 2.2 million years ago to the present (the light red horizontal bar shows increased climate variability) (a) Global climate change. (b) Vegetation history of the North China Plain based on pollen analysis. (c) Hominin brain size estimates for Africa and Eurasia. (d1) Stone tool changes through time in the Nihewan Basin, China, showing the frequency of artefacts across different time periods (dark green bars). (¬d2) Key stone tool changes across China.

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.