We’ve contacted Paypal, they tell us that the problem with donations has been a glitch on their end. They also say that sometime tomorrow or the next, it should be working OK.
I’ll also mention that, although I often post about new scientific results and mathematical analyses, often quite technical, I also feel the need to post about what’s happening right now, and in simple terms. Many of you are quite knowledgeable and sophisticated, but I need to write stuff for the more typical lay reader as well. So, my next post will be a simple exposition of recent temperature in the northern hemisphere, on land, but (I hope!) will not be very technical.