Big brands are paying startup Vaulted Deep $58.3 million to shoot poop and other organic waste products into underground wells as a way to fight climate change.

The deal was brokered by a group called Frontier Climate, which Stripe, Alphabet, Meta, Shopify, and McKinsey Sustainability launched in 2022 to support emerging climate tech. Specifically, Frontier is interested in trying to remove carbon dioxide from the atmosphere. They connect buyers with startups like Vaulted Deep that are developing ways to capture CO2 and sequester it underground so that it doesn’t heat up the planet.