|Who killed megafauna?|
- New research suggests humans arrived in Australia 65,000 years ago.
- This would mean they lived alongside the continent's unique megafauna.
- Some experts have argued that humans may have caused their extinction.
- Researchers involved in study argues new evidence suggests this is not the case.
- Not everyone is convinced, however, arguing that arriving on the continent early gave them more chance to wipe out the megafauna.
humans arrived in Australia around 65,000 years ago, around 18,000 years earlier than one estimate.
This graphic (at right) shows the movement of our human ancestors based on the latest research.