A look at Blaenavon, featuring Big Pit and the Blaenavon Ironworks.
Possible solutions to the crisis facing Britain as a result of its ageing population.
Some of the issues climate change in Wales will present to farmers in the next 25 years.
News report from Montserrat some months after a large volcanic eruption.
Discussion of China's population control measures and how it affects one family.
Discussion of methods of family planning employed in Kerala state, India.