TV & radio guide - Tuesday

The Secrets of Maps (9.30 am). "Colonial Secrets": Simon Calder on the maps of British colonies that were ordered in 1670.
Harsh Realities (9.00 R4). Medical series on NHS priorities and treatment.
Congo (9.00 BBC2). Last in series concentrates on the primates of the Congo basin and traces of past human civilisations.
» Night Waves (9.30 R3). With items on Pirandello and poet Menna Elfyn.
The Fall and Rise of Sex (10.00 C4). Sexual dysfunction documentary.
Boston Law (10.35 BBC1 - 11.05 in N. Ireland, Wales and Scotland). More behind-the-scenes stuff from the Boston courts.