The reaction Mr Lerner proposes would break up boron atoms by hitting them with protons (the nuclei of normal hydrogen atoms).

ECONOMIST: A novel form of fusion power

It consists of 1, 000 tonnes of heavy water (the sort that has deuterium, a heavy form of hydrogen, in its molecules, instead of the normal, light form of the element).

ECONOMIST: The news that neutrinos have mass is both good and bad