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Science & Space

The most popular blog posts about science & space on Hacker News. 15 posts.

2008
14

Why rats can't vomit, and why humans do

Rats can't vomit. They can't burp either, and they don't experience heartburn. Rats can't vomit for several related reasons: (1) Rats have a powerful barrier between the stomach and the esophagus. They don't have the esophageal muscle strength to overcome and open this barrier by force, which is necessary for…