IN GEOPHYSICS, an epicentre is the place on the surface of the Earth closest to the point in its depths where intolerable pressure has triggered an earthquake.
TopCreating the new hydrogen economy is a massive undertaking
TODAY’S HYDROGEN business is, in global terms, reasonably small, very dirty and completely vital. Some 90m tonnes of the stuff are produced each year, providing revenues of over $150bn—approaching those of ExxonMobil, an oil and gas company.