In the third of a series of travel stories D J Clark meets photographer Chang He in his hometown Shanghai. Chang He starts the day by giving Clark a google map of his favourite places around the city and sends him off for a packed day of discovery.

In the second of a series of travel stories D J Clark meets photographer Wang Jingchun in his favourite city of Dali, Yunnan.

In the first of a series of travel stories D J Clark sets off to discover the Bangladeshi capital city of Dhaka with renowned photographer GMB Akash as his guide.

About three years ago Tom Huang found himself in increasing pain from a bad stomach and went to the hospital for a diagnosis. The doctors told him it was the food he was eating that caused the problem and he needed to change to a healthier diet. Tom could not afford the expensive organic food offered in the Beijing supermarkets so he joined the increasing army of urban farmers tending small plots of land on the outskirts of the city. The first five parts of this series made the case that populations across Asia are increasing at a faster rate than food production and that unless something is done the continent will face a food crisis. In the last part D J Clark returns to Beijing to investigate the development of urban farming as a means to mitigate increasing global food prices.

This video, the fifth in a series on the looming food crisis in Asia, looks at biotechnology as one of many different solutions to increase crop yields.

In this part Clark investigates the role of markets and governments in managing access to food.

In the third part of this series, D J Clark discusses increasing food insecurity in cities where access to food rather than the lack of food is a rising issue.

In the second of a six part series investigating the growing gap between food production and global population growth, DJ Clark crosses the Chinese border into the western hills of Nepal to investigate the age-old problem of food shortages in vulnerable rural communities.

In the first of a six part series investigating the growing gap between food production and global population growth, DJ Clark explains the key issues facing Asia and how they have arisen.

On a journey across southern Africa to investigate the World Cup Legacy, D J Clark found a small grassroots soccer scheme that was helping communities in the semi dessert towns of the Karoo to fight HIV/Aids.