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Dallas visits CERN's canteen for a science chat.
Jem reveals the maths behind the light bulb oven.
Why can’t airliners fly below the volcanic ash cloud?
Jem explains how volcanic ash can affect aircrafts.
Liz explains DNA replication and the role of telomeres.
Jem explains the secrets of a remarkable alloy.
- Stephen Hawking, theoretical physicist (1942-present)
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