Today, the U.S. Department of Energy’s (DOE) Office of Fossil Energy, in collaboration with the Office of Energy Efficiency and Renewable Energy, the Office of Science and NETL announced a request for information (RFI) about “enhanced weathering” research opportunities that could lead to advances in the capture and storage of carbon dioxide (CO2). Weathering is nature’s process in which rocks are broken down and dissolved over time. The natural breakdown process releases calcium, which can bind to CO2 and remove it from the atmosphere. Enhanced weathering uses technology or modified land-use approaches to accelerate the decomposition of calcium- and magnesium-rich silicate rocks and increase the rate of CO2 removal from the atmosphere. It is, in effect, a technology with negative CO2 emissions. In addition to its CO2 removal benefits, enhanced weathering can improve soil quality and fertility.