Actor (and travel tech investor) Ashton Kutcher is at it again, as his Sound Ventures venture capital firm has co-led a $15 million investment in climate tech company Chooose.

It’s the latest in a long chapter of travel investing for Kutcher, revealed on Friday, with previous deals including Affirm, Airbnb, Hipmunk and Citymaps, which was bought by TripAdvisor .

Norway-based Chooose, which offers climate solutions such as carbon offsetting, carbon removals and sustainable aviation fuel, already works with global companies and airlines including British Airways, Air Canada and Japan Airlines. It also works with Booking.com, Trip.com and SAP Concur.

Startups like this have fast emerged out of the need to give companies better insight into their carbon footprints when flying. This extra capital will go towards scaling up its platform, and further “embed climate action solutions into customer experiences.” It also plans to expand into new geographies, thanks to the funding provided by Soundwaves, which is the sustainability-focused vehicle of Kutcher’s fund.

GenZero, a decarbonisation-focused investment company owned by Singapore’s Temasek, also co-led the investment round. Existing investors Shell Ventures and Vinyl Capital also participated in the strategic capital round. Other current investors include travel technology giant Amadeus and Contrarian VC.

UPDATE: This article was amended to remove the series B mention, which had originally been provided.

Tags: airbnb, amadeus, carbon emissions, carbon offsets, climate change, startups, sustainability, tripadvisor