This is an automated archive made by the Lemmit Bot.

The original was posted on /r/science by /u/fchung on 2025-09-25 18:41:43+00:00.

Original Title: Spirals in the umbilical cord help to keep babies cool before birth, new research finds: « The spiral design of the blood vessels in the cord appears to affect the exchange of oxygen and heat, minimising the risk of heat and oxygen being lost. »