Contributors

Sarah Achenbach ("Building a New Web Block by Block," p. 54) is a Baltimore-based freelance writer who has written extensively for Johns Hopkins publications.

Keith Barraclough ("On Being Paul Rabil," photography, p. 48) is a portrait and lifestyle photographer based in New York. His past clients have ranged "from puppies to corporate executives," according to his website.

Pete Croatto ("On Being Paul Rabil," p. 48) is the author of From Hang Time to Prime Time: Business, Entertainment, and the Birth of the Modern-Day NBA.

Doug Donovan ("Fighting for Your Right to Know," p. 20) works in strategic communications at Johns Hopkins. He previously worked for The Baltimore Sun, where he was an award-winning investigative reporter.

Jodi Hilton ("Raising Their Voices," photography, p. 34) is a photojournalist based in Cambridge, Massachusetts. Past clients include The New York Times, The Washington Post, and The Guardian.

Harriet Lee-Merrion ("What's Troubling Our Teens?" illustration, p. 40) is an award-winning visual artist whose clients have included Google, The Guardian, and The New Yorker.

On the cover

Barcelona-based illustrator Edmon de Haro sought to demystify blockchain technology with this issue's cover, a preview of "Building a New Web Block by Block." Fusing several objects—in this case, a padlock, a handshake, and chain links—de Haro's artwork communicates the digital security offered by blockchain, as well as the real-world benefit it provides in person-to-person transactions.