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Hi, I'm Drew. Welcome to my low-sodium, GMO-free, gluten-free website! I am an assistant professor of environmental studies at Oberlin; also, I proudly possess object permanence. Navigate as follows:
Date: 1 October 2026 at 6pm ET
Location: Cat in the Cream Coffeehouse
I will be talking about the bizarre atmosphere of Titan, moon of Saturn, in a (hopefully) fun popular science talk. Come learn about a moon where it rains natural gas and you could fly if you made like Icarus and flapped your wings!
Date: 25 October 2026 at 3pm ET
Location: Raleigh Marriott City Center
I will be presenting on trends in ammonia emissions from agriculture at the 2026 Reducetarian Summit in Raleigh, NC. More info here.
Date: 28 October 2026 at 5:30pm ET
Location: Akron-Summit County Public Library Main Branch (60 S High St, Akron, OH 44326)
I will be discussing my book Half-Earth Socialism in an event hosted by Akron DSA.
Additional events, future and past, are available on my events page.
You can learn more about my research on the projects page, or you can read through all of my scientific papers and presentations on their respective pages.
This story covers the history of the popular reception of complexity and chaos, and how, in the process of translation from natural science to popular culture, ideas like complex systems and the butterfly effect have been used to buttress both deeply reactionary political projects and left-wing ones. This essay asks: Does complexity have any inherent politics? If it does, what are the implications for markets, planning, and collective environmental action?
Pendergrass, D. C. (2026). "Complexity in the air." The Break-Down Magazine. | Read it here | Get the PDF.
Read more of my writing here, or see all featured interdisciplinary projects on my projects page.
19 September 2022 | Listen here
My co-author Troy Vettese and I spoke with Sasha Lilley of Against the Grain on KPFA (Berkeley) about our book Half-Earth Socialism.
Additional interviews and media are available on my interviews page.
The Half-Earth Socialism planning game allows anyone to try their hand as a global planner of a post-capitalist science fiction society. The player aims to overcome the environmental crisis, global poverty and inequality, and pursue other goals, all while keeping global parliament happy (else the player will find themselves out of a job, or worse). Consider it a sandbox where you can play with a wide range of technologies and policies spanning different fields and ideologies. The game simulates the impact of your decisions by calculating emissions and using a real climate model (HECTOR) to work out the climate effects, while also simulating impacts to the food system and biodiversity, among other natural systems.
The video game is based on my book, Half-Earth Socialism, and was made by a team including Francis Tseng, Son La Pham, Troy Vettese, and myself. For more, you can visit the book homepage or play the game for free in your browser (mobile/desktop both supported)!