Excerpt from this article:
Now Allen, 42, is one of the most powerful science communicators in the U.S. as head moderator of Reddit’s science community, called the science subreddit(www.reddit.com/r/science). The science subreddit has almost 18 million subscribers and is growing by the equivalent of the Chicago Tribune’s print circulation—about 500,000—every month.
By day, Allen is a synthetic organic chemist at MilliporeSigma in Milwaukee, where he lives with his wife and two daughters, two and five years old. Leading the science subreddit is a volunteer position he does on the side.
And Allen keeps doing it because he feels passionately that more scientists—especially chemists—should be making sure science is fairly represented on the internet and in the larger world.