I don't understand, why post to HN a link to a Khan academy class that's at least 13 years old?
I'm a geneticist, so it's nice to see, but it doesn't seem to belong on HN to me either. Maybe because someone thinks this information should influence their use of the hot-new pseudoscience cureall - "peptides"?
Methinks someone's experimenting with a botnet -- "can we bypass HN's checks and balances to get an entirely-irrelevant topic to the front page, and keep it there for x hours?"