15 February 2018: Optical clocks, healthy ageing, and fieldwork during pregnancy

This week, refocusing ageing research, a transportable optical clock, and researching during pregnancy.

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The Nature Podcast brings you the best stories from the world of science each week. We cover everything from astronomy to zoology, highlighting the most exciting research from each issue of Nature journal. We meet the scientists behind the results and providing in-depth analysis from Nature's journalists and editors.

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