Carbon-negative solutions include engineered methods like direct air capture (DAC) and nature-based solutions. Agro-Sequestration, proposed by Yablonovitch and Deckman, offers a natural and permanent storage approach by burying dried, salted biomass in biolandfills, preventing decay. This scalable method could sequester up to 20 Gt of CO₂ annually, providing a cost-effective solution for climate change mitigation.