Bioethanol made from fermented agricultural waste can be turned into zero-carbon hydrogen through a new process that uses ...

However, if a carbonate buffer is added to the solution, the situation changes. This is carbonic acid (H 2 CO 3), which can ...

A hydrogen atom from the carbonic acid bonds to the carbonate ion in ocean water and creates a bicarbonate ion (HCO-3) which the shell-making organisms can’t use.