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The team investigate how close Britain might get to running out of electricity.

Liz Bonnin explains how cells turn cancerous by blowing high-tech bubbles.

Liz Bonnin takes a look at how big data monitors Rolls Royce jet engines.

The team investigate the ill effects of old age, from weakened bones to dementia.

The team look at flu, with Jem Stansfield explaining the disease on a cellular level.

With the waters receding, the team takes a more considered look at the recent floods.

The team look at measures engineers take to ensure Britain's rail system stays on track.

A look at the problems the humanitarian community faces when tackling a disaster.