Nasa begins first ever exploration of Mars’ interior

Nasa launches the Mars InSight lander to explore the mysterious insides of the red planet. It will take six months before the spacecraft arrives to begin its unprecedented geological excavations. Video: Nasa

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How to spot bowel cancer symptoms

In the last 30 years in Ireland, the number of bowel cancer cases under-50 has doubled, according to Bowel Cancer Ireland. Video: Rebecca Daly / Zara Morgan


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