People moved into rainforests much earlier than thought
Living year-round in jungles began by 20,000 years ago, a new study finds
![Rock-shelter in Sri Lanka](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/03/bb_rainforest_free.jpg?fit=860%2C460&ssl=1)
PERMANENT RESIDENT Teeth excavated from this rock-shelter in Sri Lanka provided the earliest evidence of long-term human rainforest occupation.
P. Roberts