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Moscow says further repairs will stop the Nord Stream 1 pipeline for three days. It's prompted further panic in Europe as leaders fear the supply will not resume, depleting reserves and pushing up prices even more. So is Russia telling the truth - or using repairs as a ploy to shock the market?

We hear from Stefan Lechtenb枚hmer, the Director of Future Energy and Industry Systems at Germany's Wuppertal Institute.

We're in the UK, where wind farms are being touted as a key alternative energy source.

Also, as NASA has trouble getting its latest mission off the ground, we explore the likelihood of humans reaching Mars.

(Picture: Parts of the Nord Stream 1 pipeline near the Germany/Poland border. Credit: Getty Images.)