Heirloom Carbon raises $150M to remove CO2 from the air using rocks

The world is set to exceed 1.5°C of warming above pre-industrial levels this year, surpassing the Paris Agreement's target. Carbon-capture startup Heirloom Carbon has raised $150 million in Series B funding to scale up its technology, aiming to reduce CO2 removal costs from $600-$1,000 to $200-$300 per metric ton by the early 2030s. Using crushed lime to capture carbon dioxide, Heirloom distinguishes itself from other direct air capture startups. Climate scientists acknowledge that carbon removal technology will be essential to combat ongoing fossil fuel use in the coming decades.