Every time there’s an oil crunch, as now, people talk about substitute fuels. And such talk invariably leads to the most amazing substitute of all – deuterium – that comes from the most basic element ...

Deuterium is a stable isotope of hydrogen, which, unlike “normal” hydrogen atoms, or protium, also contains a neutron. The isotope deuterium has one proton, one neutron and one electron. One out of ...