When he wasn't designing warships, John Ericsson was dreaming up solar technology. The Swedish American inventor, credited with the screw propeller and the first ironclad vessel in the U.S. Navy, ...

In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that one trip around the Sun takes more than 11,000 years. For much of that time ...

China’s latest wave of solar mega‑factories is not just adding capacity, it is redefining the scale at which a single country can manufacture and install clean power. From desert complexes the size of ...