Neustark secures $69M to lock carbon in concrete for 100,000 years

Swiss startup Neustark has raised $69mn to take its carbon capture technology global. BlackRock, the world’s largest asset manager, and Singaporean investment firm Temasek led the funding round. Neustark captures waste CO2 from biogas production. It injects it into recycled concrete, which then gets reused to make new roads and buildings. The concrete stores the carbon for at least 100,000 years, even if it gets demolished. “We turn the world’s largest waste stream — demolition concrete — into a carbon sink,” said Johannes Tiefenthaler...