I'm very glad to announce that the world's fourth-oldest scientist/mathematician/engineer, Joan van der Waals, who I personally know(!*), has turned 102 today. I first noticed him almost 10 years ago, when I found out he was a (to me then shockingly) 92! Imagine I would have been told he'd be around 10 years later.
*Ok, I had at least 3 conversations with him that lasted at least 10—15 minutes. You decide whether that counts :p
(Btw, I've written some more about him, both on t1c, and in a short little Dutch article. What is the policy on this? I would like to add him as a separate topic in "Notable centenarians" or something, a title he most definitely warrants. Can we link to that site, can we copy texts? What's best for the independence of this forum in this case?)
Sadly, Joan has died yesterday, aged 102:050.
It was a hard blow for me. Even at his advanced age, I had expected him to be here next year.