Things We Don’t Know

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The Placenta (Things We Don’t Know about Pregnancy Series #4)
What is the placenta? This two-sided disc is complex and poorly understood. Scientists are still exploring how it grows and how it functions.
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Magnetic Monopoles and Geometry
Is there a magnetic version of the jumper-balloon experiment - charging an object magnetically to make a magnetic monopole?
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Bizarre symptoms (Things We Don’t Know about Pregnancy Series #3)
For many women, pregnancy is a medley of bizarre and persistent symptoms, including the wild and the weird, the explained and the inexplicable, from crazy dreams to sense of smell.
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Diving with ‘Monsters’
From electroreceptors to their fear of their own dead, sharks offer many mysteries. Join us as we plunge into the shark tank.
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Weight (Things We Don’t Know about Pregnancy Series #2)
We don’t know how much difference a woman’s weight or weight gain during pregnancy make for her and her baby’s health. Some effects are known, but not risk thresholds.
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Morning Sickness (Things We Don’t Know about Pregnancy Series #1)
What causes morning sickness? Why does it vary so much woman to woman? It may be linked to the placenta, and there could be evolutionary reasons for it.
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