.sciencenews.org/article/cells-fat-mend-bone-cartilage-muscle-and-even-heart">SN: 3/19/16,
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, p. 22). Clinical studies are currently under way to test these stem cells as potential treatments for chronic obstructive pulmonary disease, type 1 diabetes and other conditions.
In the case of COPD, Harry Walker wondered how stem cells know to target lungs and what potential side effects might be.
When stem cells are injected back into the body through a vein,
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, but the presence of stem cells in the lungs has been shown to have an anti-inflammatory effect and can help regenerate damaged lung tissue.”
Editor’s note
Thomas Sumner’s,
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?feature “Mystery at the center of the Earth,” (SN: 9/19/15, p. 18) explored the scientific debate over the mechanisms that power Earth’s magnetic field. Over the last few years, multiple research teams reported that iron conductivity in the planet’s interior is much higher than once thought,
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, creating a paradox concerning the strength of the early Earth’s magnetic field.
On April 13,
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, 2016, researchers retracted a study in Nature featured in the article. Computer

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