Stone tools put early hominids in China 2.1 million years ago
The discovery suggests hominids left Africa 250,000 years earlier than thought
![stone tool at Shangchen](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/07/061118_BB_shangchen_feat.jpg?fit=860%2C460&ssl=1)
EARLY ARRIVAL Researchers excavate a stone tool from 2.1 million-year-old sediment at Shangchen, China. Newly reported discoveries at Shangchen indicate that it’s the oldest known hominid site outside Africa.
Z. Zhou/CAS