Tagged With egg

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Northwestern University biologist Jonathan Tilly is certain he's found egg-making stem cells in adult mice. If he's right, it would refute decades-old work that showed female mammals finish making all their eggs before or shortly after birth. This might make it possible to grow new eggs inside the ovaries of older women.

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It's really embarrassing how many sleepless nights I've had due to my brain synapsing and wondering whether the chicken or the egg came first. I flip, I flop, I twist, I turn — it's definitely a good brain exercise. But after watching ASAP Science definitively answer the question of which came first — the chicken or the egg — I can now sleep in peace.