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Newest coolest project: I finished a book! (Ok, I'd like to make a few changes, but it's essentially done.) EarthCalculus: Resources and Worksheets for Adventurous Instructors has a whole series of real-life calculus applications, as well as more than 100 pages of worksheets and their solutions. Check it out at Leanpub.

Here's another project: check out my guest post at mathbabe.org on where graduating math PhD students go. Recently (summer 2014) I got some more data on arXiv publications by topic/gender/etc, which I am exploring right now with Ursula Whitcher.

Old projects: a mellow afternoon's worth of learning about PHP: a rough response to What do I need on my final? for the class I taught at Cornell at What do I need on Prelim 3 and the final?.