1/2. Ben Anderson returns with a second set of travelogues, this time journeying around the notoriously hazardous west coast of Africa - an area synonymous with drugs, diamonds, corruption and civil war. His first ports of call are Liberia and Sierra Leone, where he finds both optimism in the face of adversity and a pervasive desire for peace. Part two tomorrow 9pm. Tips on visiting African hotspots: p11