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Takes a look at how animals sense time and how some can alter their metabolism to help them survive.
Last on
Mon 26 Apr 199920:00
BBC Choice
Broadcasts
- Tue 20 Apr 199920:30
Thu 22 Apr 199922:00BBC Choice
Fri 23 Apr 199923:50BBC Choice
Sat 24 Apr 199919:00BBC Choice
Mon 26 Apr 199920:00BBC Choice