He is also senior scholar and vice president of the Poynter Institute for Media Studies, a journalism think tank in St. Petersburg, Florida, and the founder of the National Writers Workshop.

Andrea Pitzer, writing for the Nieman Foundation for Journalism at Harvard University, has called Clark “one of narrative journalism’s hardest working midwives.”[7] He has written the books Writing Tools: 50 Essential Strategies for Every Writer (Little, Brown and Company, 2006), The Glamour of Grammar: A Guide to the Magic and Mystery of Practical English (Little, Brown and Company, 2010), and Help!

Writing Tools: 50 Essential Strategies for Every Writer (Little, Brown and Company, 2006) grew out of a series of columns written for Poynter.

[13] Clark discusses the 50 tools, including the "clarity and narrative energy" (p. 12) that comes with using right-branching sentences, in podcasts, which, according to Poynter, have been "downloaded more than a million times.

"[6] In The Glamour of Grammar: A Guide to the Magic and Mystery of Practical English (Little, Brown and Company, 2010), Clark traces the words 'glamour' and 'grammar' back to their common roots.