EnvironmentThe gold hydrogen rush: Does Earth contain near-limitless clean fuel? Prospectors around the world are scrambling to find reserves of "gold hydrogen", a naturally occurring fuel that burns without producing carbon dioxide. But how much is really out there and how easy is it to tap into? Features
EarthWorld's first tunnel to a magma chamber could unleash unlimited energy In Iceland, scientists are planning to drill two boreholes to a reservoir of liquid rock. One will give us our first direct measurements of magma – the other could supercharge geothermal power Features