Preserved hair reveals just how bad lead exposure was in the 20th century 12 hours ago (livescience.com) 1 comment Brajeshwar Reply Add to library ChrisArchitect 12 hours ago [dupe] you just can't resist can you https://news.ycombinator.com/item?id=46865275
ChrisArchitect 12 hours ago [dupe] you just can't resist can you https://news.ycombinator.com/item?id=46865275
[dupe] you just can't resist can you https://news.ycombinator.com/item?id=46865275