xkcd: webcomics & what-ifs

A webcomic of romance, sarcasm, math, and language. It was started by a CNU graduate, Randall Munroe, with a degree in physics. Before starting xkcd, he worked on robots at NASA's Langley Research Center in Virginia.
The comic's tagline describes it as a "Stick-figure strip featuring humor about technology, science, mathematics and relationships"

xkcd:612

Since July 2012, there has been a branch of xkcd called xkcd What-If, which is updated every Tuesday. What If? answers unusual reader-submitted science questions in a creative and humorous, but always mathematically sound, way, and is presented more in the format of an article than a traditional comic strip.