Probably because yesterday on reddit, this article was trending: https://www.reddit.com/r/todayilearned/comments/6p1iwi/til_a_michigan_rock_collector_found_an_i

Probably because yesterday on reddit, this article was trending: https://www.reddit.com/r/todayilearned/comments/6p1iwi/til_a_michigan_rock_collector_found_an_impressive/ https://www.reddit.com/r/todayilearned/comments/6p1iwi/til_a... ("TIL A Michigan rock collector found an impressive 93 lb. Petoskey stone in Lake Michigan in 2015, only to have it promptly confiscated by authorities. The stone violated a Michigan law that states no more than 25 pounds of rocks or minerals can be taken from the Great Lakes per year.") I'm guessing that someone reading that reddit post found the phenomenon interesting and submitted its Wikipedia page to news.ycombinator.