Brunei is one of the world's richest countries due to its oil and gas industry.

For nearly 100 years, oil has provided generously for its 400,000 citizens.

It has also kept at bay, for now, any attempts to exploit the virgin rainforests which cover a large part of the country.

But there are fears that may change as oil reserves begin to run out.

Divya Gopalan reports from Brunei.