Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
mometsi
38 days ago
|
parent
|
context
|
favorite
| on:
I'm Wirecutter's water-quality expert. I don't fil...
It's not used for b12 production in human metabolism. It is, after all, a vitamin. Is this about cobalt deficiency in dairy and meat animals?
Consider applying for YC's Fall 2025 batch! Applications are open till Aug 4
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
