Puzzlebomb is a monthly puzzle compendium. Issue 41 of Puzzlebomb, for May 2015, can be found here: Puzzlebomb – Issue 41 – May 2015 The solutions to Issue 41 can be found here: Puzzlebomb – Issue 41 – May 2015 – Solutions Previous issues of Puzzlebomb, and their solutions, can be found here.
The Journal of K-Theory is dead

Following on from the resignation of the editorial board, CUP has announced that it’s not publishing the Journal of K-Theory any more. The new journal started by the former editors, Annals of K-Theory, aims to start publishing papers online this year.
Review: CALX, a calculator for iPhone

Reader Danial Clelland wrote in to tell us about his new calculator app for iPhone, CALX. None of us owns an iPhone, but I borrowed someone else’s for a while and had a brief look at the app.
The Aperiodical is 3

The Aperiodical turned three on Saturday. I was away attending my brother’s wedding, but I couldn’t let the birthday pass without mention. In three years we’ve published 1,462 posts (make that 1,463 including this one) by 32 authors, read by 713,000 visitors. Thanks for reading!
Mathical books for kids award winners announced

US organisations the Mathematical Sciences Research Institute (MSRI) and the Children’s Book Council (CBC) have founded a youth book prize, called Mathical: Books for Kids from Tots to Teens. The prizes, awarded for the first time this year, recognise the most inspiring maths-related fiction and nonfiction books aimed at young people. This year, they’ve awarded a set…
#thatlogicproblem round-up

The internet and media have been abuzz with a certain logic problem this week. Here’s our round-up.
Carnival of Mathematics 121
The next issue of the Carnival of Mathematics, rounding up blog posts from the month of March, and compiled by Ioana, is now online at Life Through a Mathematician’s Eyes. The Carnival rounds up maths blog posts from all over the internet, including some from our own Aperiodical. See our Carnival of Mathematics page for more…