Bang Goes the Theory S1E7 - Braking Systems & Origins Of Speech
7.8/10 by 5 users
Jem Stansfield tests new braking systems and Liz Bonnin looks into the origins of speech.
| Released | Jul 27, 2009 |
|---|---|
| Runtime | 30min |
| Genre | Family, Documentary |
| Actor | N/A |
| Director | N/A |
| Production | BBC |
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