Preserved hair reveals just how bad lead exposure was in the 20th century livescience.com 19 points by Brajeshwar a day ago
ChrisArchitect a day 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