proud geoengineer. Cooling Earth, 1 balloon at a time. ceo @MakeSunsets, previously director hardware @YCombinator.
Joined March 2008
- Tweets 712
- Following 1,015
- Followers 1,851
- Likes 606
93 Photos and videos
Jun 12
the end when the table leg starts lifting makes me unreasonably happy
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May 8
This week I launched 8,430g of sulfur dioxide to the stratosphere. Single-handedly... and with the support of 1,084 customers;)
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luke iseman retweeted
Apr 25
this was even more fun to do than it looks. thanks, rando statue!
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Apr 23
first and definitely not the last blimp flight!
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Mar 24
Episode 2 is live. @liseman from @MakeSunsets is deploying sulfur dioxide to the stratosphere and selling cooling credits to fund it.
I believe cooling is necessary! But I'm less sure that acting without institutional buy-in gets us where we need to go. Luke's dismissal of deployment risks is both compelling and concerning, and I'd love to hear where you come down.
Link to full episode below.
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luke iseman retweeted
Feb 27
We just hit a new milestone!
This month, we deployed a record-breaking 23,951 Cooling Credits, offsetting the equivalent of what over 1 million mature trees lasting a year.
Yesterday’s launch helped push us over the edge: 3 biodegradable balloons, 4,585g of SO2, and a 100% success rate reaching the stratosphere.
Launch details below
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Feb 8
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Jan 25
always a bad product name: “you should go the doctor: that might be a ______”
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14 Nov 2025
“Make Sunsets looks like amateur league, academics come across as hypocrites, and the nonprofits seem focused on complaining about anyone ever doing anything,” Iseman said in an email to E&E News. “In other words, Ben accurately documented reality.”
- eenews.net/articles/document…
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luke iseman retweeted
6 Nov 2025
incredible things are happening in the skies above modesto CA @MakeSunsets
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6 Nov 2025
jfc. it's like the one other geoengineering co is trying to be as sketchy as possible.
"Stardust Solutions hired the the law firm Holland & Knight in the first quarter of 2025, but the firm didn’t disclose its lobbying “due to a clerical error"
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4 Nov 2025
"we are ~250 years into a global geoengineering experiment... It isn’t if we should start, it’s how we should continue... we can take responsibility for everything humans *do*, not just what we *mean to do.*" - peterolivier.substack.com/p/… @PeterOlivier
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luke iseman retweeted
19 Mar 2023
We are the world’s geoengineers and we might as well get good at it
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23 Oct 2025
1 minute up to 21km and (almost) back down. freeze literally on any frame for a beautiful view
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23 Oct 2025
battery died after (junk) barometer readings confused (accurate) gps. sensor fusion great... until it isn't
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