They have made cement alternatives, and proposed recycling cement or mixing ... into a tank of seawater and apply a low electrical current to split the water. Then they bubble carbon dioxide ...

What happens if we take carbon dioxide from the air and store it underground? A new study shows: CO2 can indeed be stored in groundwater permanently, without ever harming the climate again.

Play this game to see how a seed or a plant is affected by changing how much water, sunlight and carbon dioxide it gets ... An average hot water tank has a 158,500 gallon capacity.