Althouse mentions that, according to his Facebook page, Mihaly Csikszentmihalyi has died – the psychologist responsible for the concept of flow. She says she couldn't find any other references to his passing in the media.
I found one reference on the Hungarian Forbes site which also references the Facebook page.
I still have his book 'Flow' in my to read pile and was thinking about which book I want to read next. I think I will make it this in his honour.