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Liz Bonnin sees how big data monitors Rolls Royce jet engines, and Jem Stansfield creates a low-tech computer system.
Liz Bonnin explains how cells turn cancerous by blowing high-tech bubbles, and Jem Stansfield builds a radiotherapy gun.
The team investigate the ill effects of old age. Maggie Philbin looks at how our muscles change as we get older, and Liz Bonnin explains how bones are made.