About Complexly

The world is not simple.

And that can seem like a burden sometimes. The reality is, the human species will never fully understand itself or its universe, let alone any individual. But instead of seeing that as a failing, we'd like to suggest that the process is as powerful as the outcome. The more we understand, the better we get at being humans, and that is one of the only worthwhile goals out there. We are a group of people who make stuff to help that process along and reflect our own excitement and enthusiasm for understanding and imagining things complexly.

Our Staff


Hank Green

Chief Executive Officer

Hank Green started making YouTube videos in 2007 with his brother, John. They thought it was a pretty dumb idea, but it turned out pretty well. In addition to his work with SciShow, Hank is the co-founder of VidCon, DFTBA Records, and Crash Course.


John Green

Chief Executive Officer

John Green is a host and co-creator of Crash Course. He is also the #1 New York Times Bestselling Author of Turtles All the Way Down, The Fault in Our Stars, Looking for Alaska, Paper Towns, and An Abundance of Katherines. John talks about world history, US history, and literature on Crash Course. His favorite band is The Mountain Goats and his second favorite band is also The Mountain Goats.


Julie Walsh Smith

Chief Operating Officer

Julie spends her time asking Hank and John what they want to do. She also just waters her plant and lurks around the office trying to make use of her Psychology degree. In her spare time, she enjoys running, hiking, random volunteering and other forms of Type II fun.   


Blake de Pastino

Chief Content Officer

Blake is a science journalist who worked for National Geographic before coming on board to report, write and edit for SciShow and Crash Course. He’s also the creator of Western Digs, a science news site that covers archaeology and paleontology in the American West.


Stan Muller

Senior Producer, Director (Crash Course, Healthcare Triage), Senior Producer (mental_floss)

Stan produces Crash Course Humanities.


Nick Jenkins

Senior Producer/Director/Editor (Crash Course, Dear Hank & John)

Nick is a musician, filmmaker, and gearhead who feeds and houses a Corgi named Abby. Also, he produces, directs, and edits Crash Course Sciences in Missoula.


Caitlin Hofmeister

Senior Producer / Host (SciShow)

Caitlin loves learning and making things. She produces all things SciShow, and hosts 1/3 of SciShow Space. One of her greatest accomplishments is receiving the "Most Likely to Say 'I Can Do That!'" Award from Hank and Michael.


Meredith Danko

Head Writer and Associate Producer (mental_floss), Story Editor (100 Days)

Meredith (formerly known as Meredith the Intern) graduated with a degree in Film & Television from Boston University. She is now the Head Writer of Mental Floss Video and Assistant Manager of the AFC Wimbly Womblys. In her spare time, she enjoys listening to podcasts, chasing her cat around the apartment, and watching terrible television.


Mark Olsen

Art Director

Mark is an Art Director and Motion Designer on a number of Complexly projects. When he’s not working, he’s likely drinking coffee or playing with his dog, Alex. Not both at the same time though, that’d be dangerous. 


Sarah Green

Host, Writer & Producer / The Art Assignment

Sarah Urist Green is the creator, curator, and host of The Art Assignment, made in partnership with PBS Digital Studios. Prior to this, she was the curator of contemporary art at the Indianapolis Museum of Art. There she curated numerous shows and developed The Virginia B. Fairbanks Art & Nature Park: 100 Acres, home of Atelier van Lieshout’s Funky Bones, which was immortalized in The Fault in our Stars, written by her slouch of a husband, John Green.


Stefan Chin

Producer (SciShow)

Stefan Chin has been making videos with SciShow since 2013. He loves motion graphics, spreadsheets, and gaming. He's also on a quest to find the best pad thai on the West Coast.


Rita Cerasoli

Finance Manager

Rita is the Finance Manager for Complexly and VidCon. In her free time, she enjoys being active.... running, biking, hiking, and practicing Bikram yoga. She has a passion for cooking and entertaining with friends. Some of her favorite things: the mountains, the ocean, full moons, wildflowers, red wine and dark chocolate, the Steelers and classic rock:-)


Nicole Sweeney

Producer (Crash Course)

Nicole says things on the internet. She loves travel, maps, panda gifs, and semicolons. Writing biographies stresses her out; she crowd sourced this one. She would like to thank Twitter for their help.


Alyssa Lerner

Senior Editor / Writer (SciShow, Crash Course)

Alyssa spends most of her time deciphering serious academic papers about asparagus. But after hours, odds are you'll find her losing spectacularly at a video game or surrounded by circuit boards and an assortment of screws. She knows an alarming number of obscure facts about tiny towns.


Ceri Riley

Editor/Writer (SciShow)

Ceri spends her time learning about things like arsenic clothing and giant laser arrays. She's worked on comics, pipetted lots of DNA, and had a one-day stint as a college mascot. Some of her favorite things are pine trees, cartoons, beagles, and green tea.


Brandon Brungard

Producer / Director / Editor (Crash Course), Editor / Sound Designer (The Art Assignment)

Brandon makes Crash Course and The Art Assignment as well as produces and directs a series on natural history, The Brain Scoop, at the Field Museum. Brandon studied engineering in college and likes to spend his time stressing out about the demise of video games due to touch screens. His other hobbies include hiking, not sleeping, and naming his pets after various types of pasta


Sheridan Gibson

Editor / Mental Floss, Director / 100 Days

Sheridan Gibson is the video editor of mental_floss video and the director of 100 Days. Sheridan follows the philosophy of Christmasism, which believes there are only two days of the year: Christmas, and Almost-Christmas.


Zulaiha Razak

Operations Manager / Script Supervisor, Producer (100 Days)

Zulaiha loves samosas, cats, and cheesy pop music. She works on Crash Course, The Art Assignment and Mental Floss Video in various capacities, while running operations at the Indy office and occasionally producing shows like 100 Days. She wears many hats. Not literally.


Matthew Gaydos

Head of Co-Productions, Producer (Sexplanations, Animal Wonders, The Financial Diet, Nature League)

Matt fills up all of his free time with other video projects, as well as playing music, making the occasional vlog, and playing video games.


Sam Schultz

Producer (SciShow Kids)

Cartoonist/animator Sam Schultz spent his youth playing Nintendo and reading Krazy Kat comics instead of learning math, but that’s worked out pretty well for him so far. In his free time he can be found stressing out about his mobile art gallery and playing Dungeons & Dragons.


Hiroka Matsushima

Videomaker (SciShow)

Hiroka is a video editor, a filmmaker/lover, a traveller, and a soon to be aunt of three nephews. Her name means “shiny flower.”  She knows it doesn’t make sense at all, but she likes it a lot.


Marie Ann Fernandez-Silva

Executive Assistant

Marie Ann loves all narratives, regardless of whether it is read, watched, listened, or played. She is surprisingly talented at corralling humans into small rooms for meetings. As a former Floridian, she is often confused by something called winter.


Victoria Bongiorno

Head of Nerdfighteria Community and Communications

Victoria has been a nerdfighter since 2007, and she can sense when anyone within a thirty-mile radius mentions Harry Potter. She graduated from SUNY New Paltz with a degree in creative writing and a minor in theatre, and she will still talk to anyone willing to listen about the Quidditch team she founded with a group of awesome nerds.

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Bill Mead

Videomaker (SciShow)

Bill is doing fine, thanks for asking. In his free time he likes to hang out with his wife, son, and two dogs, Yogurt and Aldo Leopold. When he has the time he enjoys tasting various ice cream flavors and acting very snobby about it.

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Josef "Tuna" Metesh

Videomaker (SciShow)

Tuna is the kind of guy who reads all the manuals for the things he buys. Nerdy, maybe, but he never has to ask about camera settings. In his spare time he plays and records music and does sound design for film, but his time is rarely spare because he has a tendency to take on more projects than he should. Someday he'll hit a balance and be able to take a break, probably, but I wouldn't count on it.

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Jenova Payton

Videomaker (SciShow)

Jenova spends her time playing video games, reading, traveling, and perpetually writing a sci-fi novel that’s always coming out next year. Her cutest distractions are her puppy, Leia, and her husband when he sings her Top Gun songs.


Seth Radley

Producer (Eons), Editor (100 Days, Crash Course)

Seth edits 100 Days and Eons and occasionally helps out with other Complexly shows. He previously worked as a senior producer at Ohio State University.

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Alexis Stempien

Editor/Writer (SciShow)

Alexis can usually be found creating things, dreaming over too-sweet coffee, or trying to decide which Elder Scrolls game has the best music. (She's still undecided.) She's also a sometimes-vlogger, Michigander, and retired college marching band geek.

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Sarah Suta

Videomaker (SciShow)

Sarah is a filmmaker/animator and occasional DJ who probably just watched a super-strange movie and would like to tell you all about it. She has entirely too many college degrees (or maybe just enough?) and a love for all things creepy-crawly.

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Christie Wilcox

Writer/Editor (SciShow)

At five years old, Christie she told her teacher she liked to "open the mouths of dead geckos to look at their tongues"—an obsession with life that has only deepened with time. She studied toxic lionfish for her PhD and wrote a book on venomous animals, so she's most proud of the fact that she's made it into her 30s unscathed. Well, except for that urchin sting. And that monkey bite. But that was really not her fault, and hey, at least monkeys aren't venomous. 

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Maia Ledesma

Videomaker (Co-Productions)

Maia is a Wisconsinite, vlogger, and juggler with a deep love for Harry Potter and BB-8. She will happily grab a beer with you and discuss the brilliance of the Lord of the Rings films. When she's not dabbling in animation or crafting ambitious Halloween costumes, she can be found overlooking a gorgeous view with a hot cup of tea, planning her next travel adventure.