The burning of fossil fuels such as coal, oil, and natural gas has led to dramatically increasing concentrations of CO2 in the atmosphere causing climate change and ocean acidification. Although technologies are being developed to capture CO2 at major sources such as power stations, this will only work and help reduce the amounts of CO2 in our atmosphere if it is safely locked away. So how does one capture and sequester carbon, and where in the world should we put it? According to researchers from the University of Southampton, the answer lies beneath the oceans in the igneous rocks of the upper ocean crust.