Murray Gell-Mann, 1969 Nobel Laureate in physics, died May 24 at the age of 89. He was best known for his work classifying subatomic particles, which led him to propose the existence of quarks, smaller constituents of protons, neutrons, and other particles that experience the strong nuclear force. He also helped found the Santa Fe Institute which focused on the study of complexity (including chaos theory), where he worked after retiring from CalTech. CalTech obituary
Game designer Alejandro (Alex) Melchor has passed away. According to facebook page Roll for Alex, where they were doing some fundraising for medical expenses, he suffered a stroke.
He had quite a few writing and design credits with Mongoose and Green Ronin over the years.