› added 8 years ago

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TIL that in 1912, Teddy Roosevelt was shot in the chest while campaigning, but the bullet was slowed by a steel eyeglass case and a 50-page speech. After determining the bullet hadn’t pierced his lung, Roosevelt proceeded to give his 90 minute speech as planned.

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0w0pA TIL Japanese researchers transplanted lab-grown heart muscle cells onto a human patient's damaged heart as a successful alternative to whole heart transplant. They turned adult stem cells into heart muscle cells, placed the cells on degradable sheets, & covered the damaged parts of the heart.
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4XY5N TIL about the illusion of explanatory depth, which leads people to overestimate how knowledgable they really are, but can be counteracted by asking them to explain how things work
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