When minerals break down they capture CO2. In the past 65 million years—before recent global warming—the dissolution of calcium and magnesium is cited as a main reason for the gradual reduction in atmospheric CO2. But breaking down minerals is not an easy or cheap process. However a study published in Geology found that ant nests accelerate the dissolution of calcium and magnesium. The study spanned a quarter century and concluded that ants are one are one of the strongest conduits for mineral decay. Way to go, ants!