Nights for Thursday 20 August 2009

7 pm News & Weather

7:15 Ancient tree hunt

Ray Hawes, head of Forestry, National Trust

The search is on to catalogue all the ancient trees of the United Kingdom, and why it is vital to effectively manage the habitats provided by these multi-centurions.

7:30 Spectrum:

People, places and events in New Zealand.

8 pm News & Weather

8:15 Windows on the World:

International public radio documentaries.

8:45 Primarily Numbers - mathematics

Dr Dennis McCaughan, mathematician, University of Otago

From finite to infinity, it adds up to a lot more than cuisenaire rods ... Fibonacci numbers.

8:59 Conundrum: Clue 7

9 pm News & Weather

9:06 Our Changing World:

Radio New Zealand's science and environment programme.

9:59 Conundrum: Clue 8

10 pm News & Weather

10:17 Late Edition

A review of the leading news from Morning Report, Nine to Noon, Afternoons and Checkpoint. Also hear the latest news from around the Pacific on Radio New Zealand International's Dateline Pacific.

11 pm News & Weather

11:06 The Music Mix